CVE-2024-36000 (GCVE-0-2024-36000)

Vulnerability from cvelistv5 – Published: 2024-05-20 09:48 – Updated: 2026-05-23 15:46
VLAI
Title
mm/hugetlb: fix missing hugetlb_lock for resv uncharge
Summary
In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: fix missing hugetlb_lock for resv uncharge There is a recent report on UFFDIO_COPY over hugetlb: https://lore.kernel.org/all/000000000000ee06de0616177560@google.com/ 350: lockdep_assert_held(&hugetlb_lock); Should be an issue in hugetlb but triggered in an userfault context, where it goes into the unlikely path where two threads modifying the resv map together. Mike has a fix in that path for resv uncharge but it looks like the locking criteria was overlooked: hugetlb_cgroup_uncharge_folio_rsvd() will update the cgroup pointer, so it requires to be called with the lock held.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 79aa925bf239c234be8586780e482872dc4690dd , < 4c806333efea1000a2a9620926f560ad2e1ca7cc (git)
Affected: 79aa925bf239c234be8586780e482872dc4690dd , < f6c5d21db16a0910152ec8aa9d5a7aed72694505 (git)
Affected: 79aa925bf239c234be8586780e482872dc4690dd , < 538faabf31e9c53d8c870d114846fda958a0de10 (git)
Affected: 79aa925bf239c234be8586780e482872dc4690dd , < b76b46902c2d0395488c8412e1116c2486cdfcb2 (git)
Affected: f87004c0b2bdf0f1066b88795d8e6c1dfad6cea0 (git)
Affected: 5.9.7 , < 5.10 (semver)
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Linux Linux Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
Unaffected: 6.1.91 , ≤ 6.1.* (semver)
Unaffected: 6.6.30 , ≤ 6.6.* (semver)
Unaffected: 6.8.9 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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}


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Taxonomy of the tags.




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.