CVE - CVE-2024-36000

CVE-ID
CVE-2024-36000	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/4c806333efea1000a2a9620926f560ad2e1ca7cc URL:https://git.kernel.org/stable/c/4c806333efea1000a2a9620926f560ad2e1ca7cc MISC:https://git.kernel.org/stable/c/538faabf31e9c53d8c870d114846fda958a0de10 URL:https://git.kernel.org/stable/c/538faabf31e9c53d8c870d114846fda958a0de10 MISC:https://git.kernel.org/stable/c/b76b46902c2d0395488c8412e1116c2486cdfcb2 URL:https://git.kernel.org/stable/c/b76b46902c2d0395488c8412e1116c2486cdfcb2 MISC:https://git.kernel.org/stable/c/f6c5d21db16a0910152ec8aa9d5a7aed72694505 URL:https://git.kernel.org/stable/c/f6c5d21db16a0910152ec8aa9d5a7aed72694505
Assigning CNA
kernel.org
Date Record Created
20240517	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240517)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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