Out-of-bounds Write Affecting perf package, versions <0:4.18.0-240.el8
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Test your applications- Snyk ID SNYK-RHEL8-PERF-3827800
- published 26 Jul 2021
- disclosed 1 Apr 2020
Introduced: 1 Apr 2020
CVE-2020-11565 Open this link in a new tabHow to fix?
Upgrade RHEL:8 perf to version 0:4.18.0-240.el8 or higher.
This issue was patched in RHSA-2020:4431.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
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://access.redhat.com/security/cve/CVE-2020-11565
- https://www.debian.org/security/2020/dsa-4667
- https://www.debian.org/security/2020/dsa-4698
- https://github.com/torvalds/linux/commit/aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd
- 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://access.redhat.com/errata/RHSA-2020:4431
- https://usn.ubuntu.com/4363-1/
- https://usn.ubuntu.com/4364-1/
- https://usn.ubuntu.com/4367-1/
- https://usn.ubuntu.com/4368-1/
- https://usn.ubuntu.com/4369-1/