CVE-2022-49747 (GCVE-0-2022-49747)
Vulnerability from cvelistv5
Published
2025-03-27 16:42
Modified
2025-05-04 08:44
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: erofs/zmap.c: Fix incorrect offset calculation Effective offset to add to length was being incorrectly calculated, which resulted in iomap->length being set to 0, triggering a WARN_ON in iomap_iter_done(). Fix that, and describe it in comments. This was reported as a crash by syzbot under an issue about a warning encountered in iomap_iter_done(), but unrelated to erofs. C reproducer: https://syzkaller.appspot.com/text?tag=ReproC&x=1037a6b2880000 Kernel config: https://syzkaller.appspot.com/text?tag=KernelConfig&x=e2021a61197ebe02 Dashboard link: https://syzkaller.appspot.com/bug?extid=a8e049cd3abd342936b6
References
Impacted products
Vendor Product Version
Linux Linux Version: eadcd6b5a1eb39866ab8d8a3e4f2e51bc51a2350
Version: eadcd6b5a1eb39866ab8d8a3e4f2e51bc51a2350
Version: eadcd6b5a1eb39866ab8d8a3e4f2e51bc51a2350
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/erofs/zmap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2144859229c1e74f52d3ea067338d314a83a8afb",
              "status": "affected",
              "version": "eadcd6b5a1eb39866ab8d8a3e4f2e51bc51a2350",
              "versionType": "git"
            },
            {
              "lessThan": "9f31d8c889d9a4e47bfcc6c4537d0c9f89fe582c",
              "status": "affected",
              "version": "eadcd6b5a1eb39866ab8d8a3e4f2e51bc51a2350",
              "versionType": "git"
            },
            {
              "lessThan": "6acd87d50998ef0afafc441613aeaf5a8f5c9eff",
              "status": "affected",
              "version": "eadcd6b5a1eb39866ab8d8a3e4f2e51bc51a2350",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/erofs/zmap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.15"
            },
            {
              "lessThan": "5.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.92",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.92",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.10",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs/zmap.c: Fix incorrect offset calculation\n\nEffective offset to add to length was being incorrectly calculated,\nwhich resulted in iomap-\u003elength being set to 0, triggering a WARN_ON\nin iomap_iter_done().\n\nFix that, and describe it in comments.\n\nThis was reported as a crash by syzbot under an issue about a warning\nencountered in iomap_iter_done(), but unrelated to erofs.\n\nC reproducer: https://syzkaller.appspot.com/text?tag=ReproC\u0026x=1037a6b2880000\nKernel config: https://syzkaller.appspot.com/text?tag=KernelConfig\u0026x=e2021a61197ebe02\nDashboard link: https://syzkaller.appspot.com/bug?extid=a8e049cd3abd342936b6"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:44:31.027Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2144859229c1e74f52d3ea067338d314a83a8afb"
        },
        {
          "url": "https://git.kernel.org/stable/c/9f31d8c889d9a4e47bfcc6c4537d0c9f89fe582c"
        },
        {
          "url": "https://git.kernel.org/stable/c/6acd87d50998ef0afafc441613aeaf5a8f5c9eff"
        }
      ],
      "title": "erofs/zmap.c: Fix incorrect offset calculation",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49747",
    "datePublished": "2025-03-27T16:42:57.094Z",
    "dateReserved": "2025-03-27T16:39:17.987Z",
    "dateUpdated": "2025-05-04T08:44:31.027Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49747\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-03-27T17:15:39.477\",\"lastModified\":\"2025-03-28T18:11:49.747\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nerofs/zmap.c: Fix incorrect offset calculation\\n\\nEffective offset to add to length was being incorrectly calculated,\\nwhich resulted in iomap-\u003elength being set to 0, triggering a WARN_ON\\nin iomap_iter_done().\\n\\nFix that, and describe it in comments.\\n\\nThis was reported as a crash by syzbot under an issue about a warning\\nencountered in iomap_iter_done(), but unrelated to erofs.\\n\\nC reproducer: https://syzkaller.appspot.com/text?tag=ReproC\u0026x=1037a6b2880000\\nKernel config: https://syzkaller.appspot.com/text?tag=KernelConfig\u0026x=e2021a61197ebe02\\nDashboard link: https://syzkaller.appspot.com/bug?extid=a8e049cd3abd342936b6\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: erofs/zmap.c: Se corrigi\u00f3 el c\u00e1lculo incorrecto del desplazamiento. El desplazamiento efectivo para a\u00f1adir a length se calculaba incorrectamente, lo que provocaba que iomap-\u0026gt;length se estableciera en 0, lo que activaba un WARN_ON en iomap_iter_done(). Se corrigi\u00f3 y se describi\u00f3 en los comentarios. syzbot report\u00f3 esto como un fallo en un problema relacionado con una advertencia encontrada en iomap_iter_done(), pero no relacionada con erofs. Reproductor C: https://syzkaller.appspot.com/text?tag=ReproC\u0026amp;x=1037a6b2880000 Configuraci\u00f3n del kernel: https://syzkaller.appspot.com/text?tag=KernelConfig\u0026amp;x=e2021a61197ebe02 Enlace del panel: https://syzkaller.appspot.com/bug?extid=a8e049cd3abd342936b6\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2144859229c1e74f52d3ea067338d314a83a8afb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6acd87d50998ef0afafc441613aeaf5a8f5c9eff\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9f31d8c889d9a4e47bfcc6c4537d0c9f89fe582c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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.