CVE-2022-50285 (GCVE-0-2022-50285)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:21 – Updated: 2025-09-15 14:21
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages The h->*_huge_pages counters are protected by the hugetlb_lock, but alloc_huge_page has a corner case where it can decrement the counter outside of the lock. This could lead to a corrupted value of h->resv_huge_pages, which we have observed on our systems. Take the hugetlb_lock before decrementing h->resv_huge_pages to avoid a potential race.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a88c769548047b21f76fd71e04b6a3300ff17160 , < 3e50a07b6a5fcd39df1534d3fdaca4292a65efe6 (git)
Affected: a88c769548047b21f76fd71e04b6a3300ff17160 , < 629c986e19fe9481227c7cdfd9a105bbc104d245 (git)
Affected: a88c769548047b21f76fd71e04b6a3300ff17160 , < 2b35432d324898ec41beb27031d2a1a864a4d40e (git)
Affected: a88c769548047b21f76fd71e04b6a3300ff17160 , < 11993652d0b49e27272db0a37aa828d8a3a4b92b (git)
Affected: a88c769548047b21f76fd71e04b6a3300ff17160 , < 568e3812b1778b4c0c229649b59977d88f400ece (git)
Affected: a88c769548047b21f76fd71e04b6a3300ff17160 , < 112a005d1ded04a4b41b6d01833cc0bda90625cc (git)
Affected: a88c769548047b21f76fd71e04b6a3300ff17160 , < c828fab903725279aa9dc6ae3d44bb7e4778f92c (git)
Affected: a88c769548047b21f76fd71e04b6a3300ff17160 , < 12df140f0bdfae5dcfc81800970dd7f6f632e00c (git)
Affected: 3f5fae4d1a3189d95b02b4b45e1218df147122bc (git)
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    Linux Linux Affected: 4.4
Unaffected: 0 , < 4.4 (semver)
Unaffected: 4.9.332 , ≤ 4.9.* (semver)
Unaffected: 4.14.298 , ≤ 4.14.* (semver)
Unaffected: 4.19.264 , ≤ 4.19.* (semver)
Unaffected: 5.4.223 , ≤ 5.4.* (semver)
Unaffected: 5.10.153 , ≤ 5.10.* (semver)
Unaffected: 5.15.76 , ≤ 5.15.* (semver)
Unaffected: 6.0.6 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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{
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm,hugetlb: take hugetlb_lock before decrementing h-\u003eresv_huge_pages\n\nThe h-\u003e*_huge_pages counters are protected by the hugetlb_lock, but\nalloc_huge_page has a corner case where it can decrement the counter\noutside of the lock.\n\nThis could lead to a corrupted value of h-\u003eresv_huge_pages, which we have\nobserved on our systems.\n\nTake the hugetlb_lock before decrementing h-\u003eresv_huge_pages to avoid a\npotential race."
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    "dateReserved": "2025-09-15T13:58:00.977Z",
    "dateUpdated": "2025-09-15T14:21:21.504Z",
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  }
}


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Sightings

Author Source Type Date

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.