CVE-2020-11565

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.”

References

https://www.debian.org/security/2020/dsa-4698

https://www.debian.org/security/2020/dsa-4667

https://usn.ubuntu.com/4369-1/

https://usn.ubuntu.com/4368-1/

https://usn.ubuntu.com/4367-1/

https://usn.ubuntu.com/4364-1/

https://usn.ubuntu.com/4363-1/

https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html

https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html

https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html

https://github.com/torvalds/linux/commit/aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3