Vulnerability 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.”
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 5.6.2 |
| Canonical | Ubuntu Linux | 14.04 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=aa9f7Mailing ListPatchVendor Advisory
- https://github.com/torvalds/linux/commit/aa9f7d5172fac9bf1f09e678c35e287a40a7b7dPatchThird Party Advisory
- 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://usn.ubuntu.com/4363-1/
- https://usn.ubuntu.com/4364-1/Third Party Advisory
- https://usn.ubuntu.com/4367-1/Third Party Advisory
- https://usn.ubuntu.com/4368-1/Third Party Advisory
- https://usn.ubuntu.com/4369-1/
- https://www.debian.org/security/2020/dsa-4667Third Party Advisory
- https://www.debian.org/security/2020/dsa-4698
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=aa9f7Mailing ListPatchVendor Advisory
- https://github.com/torvalds/linux/commit/aa9f7d5172fac9bf1f09e678c35e287a40a7b7dPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
FAQ
What is CVE-2020-11565?
CVE-2020-11565 is a vulnerability with a CVSS score of 6.0 (MEDIUM). 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, a...
How severe is CVE-2020-11565?
CVE-2020-11565 has been rated MEDIUM with a CVSS base score of 6.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-11565?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Canonical Ubuntu Linux.