Description
In the Linux kernel, the following vulnerability has been resolved: mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages The h->*_huge_pages counters are protected by the hugetlb_lock, but alloc_huge_page has a corner case where it can decrement the counter outside of the lock. This could lead to a corrupted value of h->resv_huge_pages, which we have observed on our systems. Take the hugetlb_lock before decrementing h->resv_huge_pages to avoid a potential race.
Affected products
linux: linux kernel
References8
- git.kernel.org/stable/c/112a005d1ded04a4b41b6d01833cc0bda90625cc Patch
- git.kernel.org/stable/c/11993652d0b49e27272db0a37aa828d8a3a4b92b Patch
- git.kernel.org/stable/c/12df140f0bdfae5dcfc81800970dd7f6f632e00c Patch
- git.kernel.org/stable/c/2b35432d324898ec41beb27031d2a1a864a4d40e Patch
- git.kernel.org/stable/c/3e50a07b6a5fcd39df1534d3fdaca4292a65efe6 Patch
- git.kernel.org/stable/c/568e3812b1778b4c0c229649b59977d88f400ece Patch
- git.kernel.org/stable/c/629c986e19fe9481227c7cdfd9a105bbc104d245 Patch
- git.kernel.org/stable/c/c828fab903725279aa9dc6ae3d44bb7e4778f92c Patch
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 5 · as of 8 November 2026
Could this be exploited in your environment?
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