CVE-2024-36000

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/[email protected]/ 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.

The following products are affected by CVE-2024-36000 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2024-36000.

URL	Resource
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
https://lore.kernel.org/linux-cve-announce/2024052023-CVE-2024-36000-cfc4@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2024-36000
https://www.cve.org/CVERecord?id=CVE-2024-36000