Detections
Analytics
CVE-2022-50285
medium
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.
References
https://git.kernel.org/stable/c/c828fab903725279aa9dc6ae3d44bb7e4778f92c
https://git.kernel.org/stable/c/629c986e19fe9481227c7cdfd9a105bbc104d245
https://git.kernel.org/stable/c/568e3812b1778b4c0c229649b59977d88f400ece
https://git.kernel.org/stable/c/3e50a07b6a5fcd39df1534d3fdaca4292a65efe6
https://git.kernel.org/stable/c/2b35432d324898ec41beb27031d2a1a864a4d40e
https://git.kernel.org/stable/c/12df140f0bdfae5dcfc81800970dd7f6f632e00c
https://git.kernel.org/stable/c/11993652d0b49e27272db0a37aa828d8a3a4b92b
https://git.kernel.org/stable/c/112a005d1ded04a4b41b6d01833cc0bda90625cc