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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2022-50285
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2022-50285.html
Vendor advisory: redhat — https://access.redhat.com/errata/RHSA-2023:2458
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rhel | 9 | fixed | |
| sles | affected | | |
| debian | bookworm | fixed | 6.0.6-1 |
| debian | bullseye | fixed | 5.10.158-1 |
| debian | forky | fixed | 6.0.6-1 |
| debian | sid | fixed | 6.0.6-1 |
| debian | trixie | fixed | 6.0.6-1 |
References
Verify integrity in audit chain (admin only). AS-IS.