Unrated severityNVD Advisory· Published Sep 15, 2025
mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages
CVE-2022-50285
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
10- osv-coords8 versionspkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_73&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5
< 4.12.14-122.275.1+ 7 more
- (no CPE)range: < 4.12.14-122.275.1
- (no CPE)range: < 4.12.14-122.275.1
- (no CPE)range: < 4.12.14-122.275.1
- (no CPE)range: < 4.12.14-122.275.1
- (no CPE)range: < 4.12.14-122.275.1
- (no CPE)range: < 4.12.14-122.275.1
- (no CPE)range: < 4.12.14-122.275.1
- (no CPE)range: < 1-8.3.1
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/112a005d1ded04a4b41b6d01833cc0bda90625ccmitre
- git.kernel.org/stable/c/11993652d0b49e27272db0a37aa828d8a3a4b92bmitre
- git.kernel.org/stable/c/12df140f0bdfae5dcfc81800970dd7f6f632e00cmitre
- git.kernel.org/stable/c/2b35432d324898ec41beb27031d2a1a864a4d40emitre
- git.kernel.org/stable/c/3e50a07b6a5fcd39df1534d3fdaca4292a65efe6mitre
- git.kernel.org/stable/c/568e3812b1778b4c0c229649b59977d88f400ecemitre
- git.kernel.org/stable/c/629c986e19fe9481227c7cdfd9a105bbc104d245mitre
- git.kernel.org/stable/c/c828fab903725279aa9dc6ae3d44bb7e4778f92cmitre
News mentions
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