Reachable Assertion The advisory has been revoked - it doesn't affect any version of package kernel-doc (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL9-KERNELDOC-9443895
- published15 Mar 2025
- disclosed20 May 2024
Introduced: 20 May 2024
CVE-2024-36000 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:9.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-doc package and not the kernel-doc package as distributed by RHEL.
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.
References
- https://access.redhat.com/security/cve/CVE-2024-36000
- https://git.kernel.org/stable/c/4c806333efea1000a2a9620926f560ad2e1ca7cc
- https://git.kernel.org/stable/c/538faabf31e9c53d8c870d114846fda958a0de10
- https://git.kernel.org/stable/c/b76b46902c2d0395488c8412e1116c2486cdfcb2
- https://git.kernel.org/stable/c/f6c5d21db16a0910152ec8aa9d5a7aed72694505