CVE-2023-52940 (GCVE-0-2023-52940)
Vulnerability from cvelistv5
Published
2025-03-27 16:37
Modified
2025-05-04 07:46
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: mm: multi-gen LRU: fix crash during cgroup migration lru_gen_migrate_mm() assumes lru_gen_add_mm() runs prior to itself. This isn't true for the following scenario: CPU 1 CPU 2 clone() cgroup_can_fork() cgroup_procs_write() cgroup_post_fork() task_lock() lru_gen_migrate_mm() task_unlock() task_lock() lru_gen_add_mm() task_unlock() And when the above happens, kernel crashes because of linked list corruption (mm_struct->lru_gen.list).
References
Impacted products
Vendor Product Version
Linux Linux Version: bd74fdaea146029e4fa12c6de89adbe0779348a9
Version: bd74fdaea146029e4fa12c6de89adbe0779348a9
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "mm/vmscan.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "04448022311cebd30969d3aebdde765f1258b360",
              "status": "affected",
              "version": "bd74fdaea146029e4fa12c6de89adbe0779348a9",
              "versionType": "git"
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            {
              "lessThan": "de08eaa6156405f2e9369f06ba5afae0e4ab3b62",
              "status": "affected",
              "version": "bd74fdaea146029e4fa12c6de89adbe0779348a9",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.1"
            },
            {
              "lessThan": "6.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.11",
              "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": "6.1.11",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: multi-gen LRU: fix crash during cgroup migration\n\nlru_gen_migrate_mm() assumes lru_gen_add_mm() runs prior to itself.  This\nisn\u0027t true for the following scenario:\n\n    CPU 1                         CPU 2\n\n  clone()\n    cgroup_can_fork()\n                                cgroup_procs_write()\n    cgroup_post_fork()\n                                  task_lock()\n                                  lru_gen_migrate_mm()\n                                  task_unlock()\n    task_lock()\n    lru_gen_add_mm()\n    task_unlock()\n\nAnd when the above happens, kernel crashes because of linked list\ncorruption (mm_struct-\u003elru_gen.list)."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T07:46:26.824Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/04448022311cebd30969d3aebdde765f1258b360"
        },
        {
          "url": "https://git.kernel.org/stable/c/de08eaa6156405f2e9369f06ba5afae0e4ab3b62"
        }
      ],
      "title": "mm: multi-gen LRU: fix crash during cgroup migration",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-52940",
    "datePublished": "2025-03-27T16:37:18.691Z",
    "dateReserved": "2024-08-21T06:07:11.022Z",
    "dateUpdated": "2025-05-04T07:46:26.824Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-52940\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-03-27T17:15:43.920\",\"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\\nmm: multi-gen LRU: fix crash during cgroup migration\\n\\nlru_gen_migrate_mm() assumes lru_gen_add_mm() runs prior to itself.  This\\nisn\u0027t true for the following scenario:\\n\\n    CPU 1                         CPU 2\\n\\n  clone()\\n    cgroup_can_fork()\\n                                cgroup_procs_write()\\n    cgroup_post_fork()\\n                                  task_lock()\\n                                  lru_gen_migrate_mm()\\n                                  task_unlock()\\n    task_lock()\\n    lru_gen_add_mm()\\n    task_unlock()\\n\\nAnd when the above happens, kernel crashes because of linked list\\ncorruption (mm_struct-\u003elru_gen.list).\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm: LRU multigeneraci\u00f3n: se corrige un fallo durante la migraci\u00f3n de cgroup. lru_gen_migrate_mm() asume que lru_gen_add_mm() se ejecuta antes que \u00e9l mismo. Esto no se cumple en el siguiente escenario: CPU 1 CPU 2 clone() cgroup_can_fork() cgroup_procs_write() cgroup_post_fork() task_lock() lru_gen_migrate_mm() task_unlock() task_lock() lru_gen_add_mm() task_unlock(). Cuando esto ocurre, el kernel se bloquea debido a la corrupci\u00f3n de la lista enlazada (mm_struct-\u0026gt;lru_gen.list).\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/04448022311cebd30969d3aebdde765f1258b360\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/de08eaa6156405f2e9369f06ba5afae0e4ab3b62\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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