CVE-2021-47254 (GCVE-0-2021-47254)
Vulnerability from cvelistv5
Published
2024-05-21 14:19
Modified
2025-05-21 08:31
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix use-after-free in gfs2_glock_shrink_scan The GLF_LRU flag is checked under lru_lock in gfs2_glock_remove_from_lru() to remove the glock from the lru list in __gfs2_glock_put(). On the shrink scan path, the same flag is cleared under lru_lock but because of cond_resched_lock(&lru_lock) in gfs2_dispose_glock_lru(), progress on the put side can be made without deleting the glock from the lru list. Keep GLF_LRU across the race window opened by cond_resched_lock(&lru_lock) to ensure correct behavior on both sides - clear GLF_LRU after list_del under lru_lock.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/0364742decb0f02bc183404868b82896f7992595 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/094bf5670e762afa243d2c41a5c4ab71c7447bf4 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/1ab19c5de4c537ec0d9b21020395a5b5a6c059b2 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/38ce329534500bf4ae71f81df6a37a406cf187b4 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/86fd5b27db743a0ce0cc245e3a34813b2aa6ec1d Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/92869945cc5b78ee8a1ef90336fe070893e3458a Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/a61156314b66456ab6a291ed5deba1ebd002ab3c Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/e87ef30fe73e7e10d2c85bdcc778dcec24dca553 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/0364742decb0f02bc183404868b82896f7992595 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/094bf5670e762afa243d2c41a5c4ab71c7447bf4 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/1ab19c5de4c537ec0d9b21020395a5b5a6c059b2 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/38ce329534500bf4ae71f81df6a37a406cf187b4 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/86fd5b27db743a0ce0cc245e3a34813b2aa6ec1d Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/92869945cc5b78ee8a1ef90336fe070893e3458a Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/a61156314b66456ab6a291ed5deba1ebd002ab3c Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/e87ef30fe73e7e10d2c85bdcc778dcec24dca553 Patch
Impacted products
Vendor Product Version
Linux Linux Version: 6948c6bc17d666663a84c124b3176039e64a58f4
Version: b568ed385a18c0ddbe41862b69088b636550a04f
Version: 762bb3528249604bc680a9df635e8995740176de
Version: bac8520892812dada1ac93f27d96317470d24b1f
Version: 7881ef3f33bb80f459ea6020d1e021fc524a6348
Version: 7881ef3f33bb80f459ea6020d1e021fc524a6348
Version: 7881ef3f33bb80f459ea6020d1e021fc524a6348
Version: 7881ef3f33bb80f459ea6020d1e021fc524a6348
Version: 1e7a416fb765c9072479dc424780c0937ba99270
Version: dcbdbe13796ffa561510d2686a6318564e728bbd
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47254",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-06-17T17:37:55.520472Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-17T17:39:42.605Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:32:07.867Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/38ce329534500bf4ae71f81df6a37a406cf187b4"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/92869945cc5b78ee8a1ef90336fe070893e3458a"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/0364742decb0f02bc183404868b82896f7992595"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/094bf5670e762afa243d2c41a5c4ab71c7447bf4"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/86fd5b27db743a0ce0cc245e3a34813b2aa6ec1d"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/a61156314b66456ab6a291ed5deba1ebd002ab3c"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/e87ef30fe73e7e10d2c85bdcc778dcec24dca553"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/1ab19c5de4c537ec0d9b21020395a5b5a6c059b2"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/gfs2/glock.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "38ce329534500bf4ae71f81df6a37a406cf187b4",
              "status": "affected",
              "version": "6948c6bc17d666663a84c124b3176039e64a58f4",
              "versionType": "git"
            },
            {
              "lessThan": "92869945cc5b78ee8a1ef90336fe070893e3458a",
              "status": "affected",
              "version": "b568ed385a18c0ddbe41862b69088b636550a04f",
              "versionType": "git"
            },
            {
              "lessThan": "0364742decb0f02bc183404868b82896f7992595",
              "status": "affected",
              "version": "762bb3528249604bc680a9df635e8995740176de",
              "versionType": "git"
            },
            {
              "lessThan": "094bf5670e762afa243d2c41a5c4ab71c7447bf4",
              "status": "affected",
              "version": "bac8520892812dada1ac93f27d96317470d24b1f",
              "versionType": "git"
            },
            {
              "lessThan": "86fd5b27db743a0ce0cc245e3a34813b2aa6ec1d",
              "status": "affected",
              "version": "7881ef3f33bb80f459ea6020d1e021fc524a6348",
              "versionType": "git"
            },
            {
              "lessThan": "a61156314b66456ab6a291ed5deba1ebd002ab3c",
              "status": "affected",
              "version": "7881ef3f33bb80f459ea6020d1e021fc524a6348",
              "versionType": "git"
            },
            {
              "lessThan": "e87ef30fe73e7e10d2c85bdcc778dcec24dca553",
              "status": "affected",
              "version": "7881ef3f33bb80f459ea6020d1e021fc524a6348",
              "versionType": "git"
            },
            {
              "lessThan": "1ab19c5de4c537ec0d9b21020395a5b5a6c059b2",
              "status": "affected",
              "version": "7881ef3f33bb80f459ea6020d1e021fc524a6348",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1e7a416fb765c9072479dc424780c0937ba99270",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "dcbdbe13796ffa561510d2686a6318564e728bbd",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/gfs2/glock.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.2"
            },
            {
              "lessThan": "5.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.4.*",
              "status": "unaffected",
              "version": "4.4.274",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.274",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.238",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.196",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.127",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.45",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.4.274",
                  "versionStartIncluding": "4.4.181",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.9.274",
                  "versionStartIncluding": "4.9.180",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.238",
                  "versionStartIncluding": "4.14.123",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.196",
                  "versionStartIncluding": "4.19.47",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.127",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.45",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.12.12",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.13",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.0.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.1.6",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngfs2: Fix use-after-free in gfs2_glock_shrink_scan\n\nThe GLF_LRU flag is checked under lru_lock in gfs2_glock_remove_from_lru() to\nremove the glock from the lru list in __gfs2_glock_put().\n\nOn the shrink scan path, the same flag is cleared under lru_lock but because\nof cond_resched_lock(\u0026lru_lock) in gfs2_dispose_glock_lru(), progress on the\nput side can be made without deleting the glock from the lru list.\n\nKeep GLF_LRU across the race window opened by cond_resched_lock(\u0026lru_lock) to\nensure correct behavior on both sides - clear GLF_LRU after list_del under\nlru_lock."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-21T08:31:40.360Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/38ce329534500bf4ae71f81df6a37a406cf187b4"
        },
        {
          "url": "https://git.kernel.org/stable/c/92869945cc5b78ee8a1ef90336fe070893e3458a"
        },
        {
          "url": "https://git.kernel.org/stable/c/0364742decb0f02bc183404868b82896f7992595"
        },
        {
          "url": "https://git.kernel.org/stable/c/094bf5670e762afa243d2c41a5c4ab71c7447bf4"
        },
        {
          "url": "https://git.kernel.org/stable/c/86fd5b27db743a0ce0cc245e3a34813b2aa6ec1d"
        },
        {
          "url": "https://git.kernel.org/stable/c/a61156314b66456ab6a291ed5deba1ebd002ab3c"
        },
        {
          "url": "https://git.kernel.org/stable/c/e87ef30fe73e7e10d2c85bdcc778dcec24dca553"
        },
        {
          "url": "https://git.kernel.org/stable/c/1ab19c5de4c537ec0d9b21020395a5b5a6c059b2"
        }
      ],
      "title": "gfs2: Fix use-after-free in gfs2_glock_shrink_scan",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47254",
    "datePublished": "2024-05-21T14:19:49.475Z",
    "dateReserved": "2024-04-10T18:59:19.539Z",
    "dateUpdated": "2025-05-21T08:31:40.360Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47254\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-21T15:15:14.233\",\"lastModified\":\"2024-12-30T19:50:58.543\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ngfs2: Fix use-after-free in gfs2_glock_shrink_scan\\n\\nThe GLF_LRU flag is checked under lru_lock in gfs2_glock_remove_from_lru() to\\nremove the glock from the lru list in __gfs2_glock_put().\\n\\nOn the shrink scan path, the same flag is cleared under lru_lock but because\\nof cond_resched_lock(\u0026lru_lock) in gfs2_dispose_glock_lru(), progress on the\\nput side can be made without deleting the glock from the lru list.\\n\\nKeep GLF_LRU across the race window opened by cond_resched_lock(\u0026lru_lock) to\\nensure correct behavior on both sides - clear GLF_LRU after list_del under\\nlru_lock.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: gfs2: corrige use-after-free en gfs2_glock_shrink_scan. El indicador GLF_LRU se marca en lru_lock en gfs2_glock_remove_from_lru() para eliminar el glock de la lista lru en __gfs2_glock_put(). En la ruta de escaneo de reducci\u00f3n, la misma bandera se borra en lru_lock pero debido a cond_resched_lock(\u0026amp;lru_lock) en gfs2_dispose_glock_lru(), se puede avanzar en el lado de venta sin eliminar la glock de la lista de lru. Mantenga GLF_LRU en la ventana de ejecuci\u00f3n abierta por cond_resched_lock(\u0026amp;lru_lock) para garantizar un comportamiento correcto en ambos lados; borre GLF_LRU despu\u00e9s de list_del en lru_lock.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"4.4.274\",\"matchCriteriaId\":\"D3914458-19C3-4C3A-BDE5-1709DBA9D80E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.5\",\"versionEndExcluding\":\"4.9.274\",\"matchCriteriaId\":\"0A84D5BC-006F-41C5-A54D-6D45236009B3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.10\",\"versionEndExcluding\":\"4.14.238\",\"matchCriteriaId\":\"C3C0DBBF-0923-4D2A-9178-134691F9933F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.196\",\"matchCriteriaId\":\"F3CAB837-7D38-4934-AD4F-195CEFD754E6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.127\",\"matchCriteriaId\":\"F4B9330C-95B8-4F1B-925D-09F7CC307E25\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.45\",\"matchCriteriaId\":\"0CF0334B-62CB-4FBC-8B76-57CC31EBDE56\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.12.12\",\"matchCriteriaId\":\"958321CA-952B-461A-A590-F4096CB20E02\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"0CBAD0FC-C281-4666-AB2F-F8E6E1165DF7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"96AC23B2-D46A-49D9-8203-8E1BEDCA8532\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"DA610E30-717C-4700-9F77-A3C9244F3BFD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"1ECD33F5-85BE-430B-8F86-8D7BD560311D\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0364742decb0f02bc183404868b82896f7992595\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/094bf5670e762afa243d2c41a5c4ab71c7447bf4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1ab19c5de4c537ec0d9b21020395a5b5a6c059b2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/38ce329534500bf4ae71f81df6a37a406cf187b4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/86fd5b27db743a0ce0cc245e3a34813b2aa6ec1d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/92869945cc5b78ee8a1ef90336fe070893e3458a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a61156314b66456ab6a291ed5deba1ebd002ab3c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e87ef30fe73e7e10d2c85bdcc778dcec24dca553\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/0364742decb0f02bc183404868b82896f7992595\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/094bf5670e762afa243d2c41a5c4ab71c7447bf4\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1ab19c5de4c537ec0d9b21020395a5b5a6c059b2\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/38ce329534500bf4ae71f81df6a37a406cf187b4\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/86fd5b27db743a0ce0cc245e3a34813b2aa6ec1d\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/92869945cc5b78ee8a1ef90336fe070893e3458a\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a61156314b66456ab6a291ed5deba1ebd002ab3c\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e87ef30fe73e7e10d2c85bdcc778dcec24dca553\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/38ce329534500bf4ae71f81df6a37a406cf187b4\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/92869945cc5b78ee8a1ef90336fe070893e3458a\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/0364742decb0f02bc183404868b82896f7992595\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/094bf5670e762afa243d2c41a5c4ab71c7447bf4\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/86fd5b27db743a0ce0cc245e3a34813b2aa6ec1d\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/a61156314b66456ab6a291ed5deba1ebd002ab3c\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/e87ef30fe73e7e10d2c85bdcc778dcec24dca553\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/1ab19c5de4c537ec0d9b21020395a5b5a6c059b2\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:32:07.867Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47254\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-06-17T17:37:55.520472Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-17T17:37:56.479Z\"}}], \"cna\": {\"title\": \"gfs2: Fix use-after-free in gfs2_glock_shrink_scan\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6948c6bc17d666663a84c124b3176039e64a58f4\", \"lessThan\": \"38ce329534500bf4ae71f81df6a37a406cf187b4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b568ed385a18c0ddbe41862b69088b636550a04f\", \"lessThan\": \"92869945cc5b78ee8a1ef90336fe070893e3458a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"762bb3528249604bc680a9df635e8995740176de\", \"lessThan\": \"0364742decb0f02bc183404868b82896f7992595\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bac8520892812dada1ac93f27d96317470d24b1f\", \"lessThan\": \"094bf5670e762afa243d2c41a5c4ab71c7447bf4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7881ef3f33bb80f459ea6020d1e021fc524a6348\", \"lessThan\": \"86fd5b27db743a0ce0cc245e3a34813b2aa6ec1d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7881ef3f33bb80f459ea6020d1e021fc524a6348\", \"lessThan\": \"a61156314b66456ab6a291ed5deba1ebd002ab3c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7881ef3f33bb80f459ea6020d1e021fc524a6348\", \"lessThan\": \"e87ef30fe73e7e10d2c85bdcc778dcec24dca553\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7881ef3f33bb80f459ea6020d1e021fc524a6348\", \"lessThan\": \"1ab19c5de4c537ec0d9b21020395a5b5a6c059b2\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1e7a416fb765c9072479dc424780c0937ba99270\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"dcbdbe13796ffa561510d2686a6318564e728bbd\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/gfs2/glock.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.2\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.2\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.4.274\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.4.*\"}, {\"status\": \"unaffected\", \"version\": \"4.9.274\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.9.*\"}, {\"status\": \"unaffected\", \"version\": \"4.14.238\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.14.*\"}, {\"status\": \"unaffected\", \"version\": \"4.19.196\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.127\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.45\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.12.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.12.*\"}, {\"status\": \"unaffected\", \"version\": \"5.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/gfs2/glock.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/38ce329534500bf4ae71f81df6a37a406cf187b4\"}, {\"url\": \"https://git.kernel.org/stable/c/92869945cc5b78ee8a1ef90336fe070893e3458a\"}, {\"url\": \"https://git.kernel.org/stable/c/0364742decb0f02bc183404868b82896f7992595\"}, {\"url\": \"https://git.kernel.org/stable/c/094bf5670e762afa243d2c41a5c4ab71c7447bf4\"}, {\"url\": \"https://git.kernel.org/stable/c/86fd5b27db743a0ce0cc245e3a34813b2aa6ec1d\"}, {\"url\": \"https://git.kernel.org/stable/c/a61156314b66456ab6a291ed5deba1ebd002ab3c\"}, {\"url\": \"https://git.kernel.org/stable/c/e87ef30fe73e7e10d2c85bdcc778dcec24dca553\"}, {\"url\": \"https://git.kernel.org/stable/c/1ab19c5de4c537ec0d9b21020395a5b5a6c059b2\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ngfs2: Fix use-after-free in gfs2_glock_shrink_scan\\n\\nThe GLF_LRU flag is checked under lru_lock in gfs2_glock_remove_from_lru() to\\nremove the glock from the lru list in __gfs2_glock_put().\\n\\nOn the shrink scan path, the same flag is cleared under lru_lock but because\\nof cond_resched_lock(\u0026lru_lock) in gfs2_dispose_glock_lru(), progress on the\\nput side can be made without deleting the glock from the lru list.\\n\\nKeep GLF_LRU across the race window opened by cond_resched_lock(\u0026lru_lock) to\\nensure correct behavior on both sides - clear GLF_LRU after list_del under\\nlru_lock.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.4.274\", \"versionStartIncluding\": \"4.4.181\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.274\", \"versionStartIncluding\": \"4.9.180\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.238\", \"versionStartIncluding\": \"4.14.123\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.196\", \"versionStartIncluding\": \"4.19.47\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.127\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.45\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.12.12\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.13\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.0.20\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.1.6\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-21T08:31:40.360Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47254\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-21T08:31:40.360Z\", \"dateReserved\": \"2024-04-10T18:59:19.539Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-21T14:19:49.475Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.