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

Vulnerability from cvelistv5 – Published: 2025-03-27 16:37 – Updated: 2026-05-11 19:36
VLAI
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
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: bd74fdaea146029e4fa12c6de89adbe0779348a9 , < 04448022311cebd30969d3aebdde765f1258b360 (git)
Affected: bd74fdaea146029e4fa12c6de89adbe0779348a9 , < de08eaa6156405f2e9369f06ba5afae0e4ab3b62 (git)
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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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Show details on NVD website
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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. 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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.