Vulnerability-Lookup

GHSA-C2P3-C9FP-43MX

Vulnerability from github – Published: 2025-03-27 18:31 – Updated: 2025-10-28 18:30

Details

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).

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2023-52940"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-03-27T17:15:43Z",
    "severity": "MODERATE"
  },
  "details": "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).",
  "id": "GHSA-c2p3-c9fp-43mx",
  "modified": "2025-10-28T18:30:23Z",
  "published": "2025-03-27T18:31:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52940"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/04448022311cebd30969d3aebdde765f1258b360"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/de08eaa6156405f2e9369f06ba5afae0e4ab3b62"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2023-52940 (GCVE-0-2023-52940)

Vulnerability from cvelistv5 – Published: 2025-03-27 16:37 – Updated: 2026-05-11 19:36

Title

mm: multi-gen LRU: fix crash during cgroup migration

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).

Severity

No CVSS data available.

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/04448022311cebd30…
https://git.kernel.org/stable/c/de08eaa6156405f2e…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: bd74fdaea146029e4fa12c6de89adbe0779348a9 , < 04448022311cebd30969d3aebdde765f1258b360 (git) Affected: bd74fdaea146029e4fa12c6de89adbe0779348a9 , < de08eaa6156405f2e9369f06ba5afae0e4ab3b62 (git)
Linux	Linux	Affected: 6.1 Unaffected: 0 , < 6.1 (semver) Unaffected: 6.1.11 , ≤ 6.1.* (semver) Unaffected: 6.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "mm/vmscan.c"
          ],
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          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
            },
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              "status": "affected",
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          "versions": [
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              "version": "6.1"
            },
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              "version": "0",
              "versionType": "semver"
            },
            {
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.2",
                  "versionStartIncluding": "6.1",
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                }
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            }
          ]
        }
      ],
      "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": "2026-05-11T19:36:08.357Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "datePublished": "2025-03-27T16:37:18.691Z",
    "dateReserved": "2024-08-21T06:07:11.022Z",
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    "state": "PUBLISHED"
  },
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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