CVE-2022-50285
mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 15, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
a88c769548047b21f76fd71e04b6a3300ff17160 < 3e50a07b6a5fcd39df1534d3fdaca4292a65efe6 a88c769548047b21f76fd71e04b6a3300ff17160 < 629c986e19fe9481227c7cdfd9a105bbc104d245 a88c769548047b21f76fd71e04b6a3300ff17160 < 2b35432d324898ec41beb27031d2a1a864a4d40e a88c769548047b21f76fd71e04b6a3300ff17160 < 11993652d0b49e27272db0a37aa828d8a3a4b92b a88c769548047b21f76fd71e04b6a3300ff17160 < 568e3812b1778b4c0c229649b59977d88f400ece a88c769548047b21f76fd71e04b6a3300ff17160 < 112a005d1ded04a4b41b6d01833cc0bda90625cc a88c769548047b21f76fd71e04b6a3300ff17160 < c828fab903725279aa9dc6ae3d44bb7e4778f92c a88c769548047b21f76fd71e04b6a3300ff17160 < 12df140f0bdfae5dcfc81800970dd7f6f632e00c 3f5fae4d1a3189d95b02b4b45e1218df147122bc
Linux / Linux
4.4
References
git.kernel.org: https://git.kernel.org/stable/c/3e50a07b6a5fcd39df1534d3fdaca4292a65efe6 git.kernel.org: https://git.kernel.org/stable/c/629c986e19fe9481227c7cdfd9a105bbc104d245 git.kernel.org: https://git.kernel.org/stable/c/2b35432d324898ec41beb27031d2a1a864a4d40e git.kernel.org: https://git.kernel.org/stable/c/11993652d0b49e27272db0a37aa828d8a3a4b92b git.kernel.org: https://git.kernel.org/stable/c/568e3812b1778b4c0c229649b59977d88f400ece git.kernel.org: https://git.kernel.org/stable/c/112a005d1ded04a4b41b6d01833cc0bda90625cc git.kernel.org: https://git.kernel.org/stable/c/c828fab903725279aa9dc6ae3d44bb7e4778f92c git.kernel.org: https://git.kernel.org/stable/c/12df140f0bdfae5dcfc81800970dd7f6f632e00c