CVE-2024-36000

mm/hugetlb: fix missing hugetlb_lock for resv uncharge

MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.22 % · centile 13 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

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.

Faiblesses (CWE)

  • CWE-617 — Assertion atteignable

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 79aa925bf239c234be8586780e482872dc4690dd < 4c806333efea1000a2a9620926f560ad2e1ca7cc ; affected 79aa925bf239c234be8586780e482872dc4690dd < f6c5d21db16a0910152ec8aa9d5a7aed72694505 ; affected 79aa925bf239c234be8586780e482872dc4690dd < 538faabf31e9c53d8c870d114846fda958a0de10 ; affected 79aa925bf239c234be8586780e482872dc4690dd < b76b46902c2d0395488c8412e1116c2486cdfcb2 ; affected f87004c0b2bdf0f1066b88795d8e6c1dfad6cea0 ; affected 5.9.7 < 5.10
Linux · Linuxaffected 5.10 ; unaffected 0 < 5.10 ; unaffected 6.1.91 ≤ 6.1.* ; unaffected 6.6.30 ≤ 6.6.* ; unaffected 6.8.9 ≤ 6.8.* ; unaffected 6.9 ≤ *

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD