CVE-2022-50285

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.

• linux linux kernel (>= 4.3.6 < 4.4) • linux linux kernel (>= 4.4.1 < 4.9.332) • linux linux kernel (>= 4.10 < 4.14.298) • linux linux kernel (>= 4.15 < 4.19.264) • linux linux kernel (>= 4.20 < 5.4.223) • linux linux kernel (>= 5.5 < 5.10.153) • linux linux kernel (>= 5.11 < 5.15.76) • linux linux kernel (>= 5.16 < 6.0.6) • linux linux kernel 4.4 • linux linux kernel 6.1