Description
An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c has a stack-based out-of-bounds write because an empty nodelist is mishandled during mount option parsing, aka CID-aa9f7d5172fa. NOTE: Someone in the security community disagrees that this is a vulnerability because the issue “is a bug in parsing mount options which can only be specified by a privileged user, so triggering the bug does not grant any powers not already held.”
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://github.com/torvalds/linux/commit/aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd ↗
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd ↗
- https://www.debian.org/security/2020/dsa-4667 ↗
- https://usn.ubuntu.com/4364-1/ ↗
- https://usn.ubuntu.com/4367-1/ ↗
- https://usn.ubuntu.com/4368-1/ ↗
- https://usn.ubuntu.com/4363-1/ ↗
- https://usn.ubuntu.com/4369-1/ ↗
- https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html ↗
- https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html ↗
- https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html ↗
- https://www.debian.org/security/2020/dsa-4698 ↗