CVE-2022-50285: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

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: from 4.3.6, before 4.4 (fixed in 4.4); from 4.4.1, before 4.9.332 (fixed in 4.9.332); from 4.10, before 4.14.298 (fixed in 4.14.298); from 4.15, before 4.19.264 (fixed in 4.19.264); from 4.20, before 5.4.223 (fixed in 5.4.223); from 5.5, before 5.10.153 (fixed in 5.10.153); …

Published 2025-09-15. Last modified 2026-06-17.