CVE-2022-50285
MEDIUM severity · CVSS 5.5
5.5CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/112a005d1ded04a4b41b6d01833cc0bda90625cc ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/112a005d1ded04a4b41b6d01833cc0bda90625ccPatch
- https://git.kernel.org/stable/c/11993652d0b49e27272db0a37aa828d8a3a4b92bPatch
- https://git.kernel.org/stable/c/12df140f0bdfae5dcfc81800970dd7f6f632e00cPatch
- https://git.kernel.org/stable/c/2b35432d324898ec41beb27031d2a1a864a4d40ePatch
- https://git.kernel.org/stable/c/3e50a07b6a5fcd39df1534d3fdaca4292a65efe6Patch
- https://git.kernel.org/stable/c/568e3812b1778b4c0c229649b59977d88f400ecePatch
- https://git.kernel.org/stable/c/629c986e19fe9481227c7cdfd9a105bbc104d245Patch
- https://git.kernel.org/stable/c/c828fab903725279aa9dc6ae3d44bb7e4778f92cPatch