CVE-2020-11565

MEDIUM

Linux Kernel < 5.6.2 - Stack-based Out-of-bounds Write in mpol_parse_str

Title source: llm
STIX 2.1

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 (12)

Core 12
Core References
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2020/dsa-4667
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4364-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4367-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4368-1/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4363-1/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4369-1/
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2020/dsa-4698
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html

Scores

CVSS v3 6.0
EPSS 0.0008
EPSS Percentile 24.1%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-787
Status published
Products (5)
canonical/ubuntu_linux 14.04
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 20.04
linux/linux_kernel < 5.6.2
Published Apr 06, 2020
Tracked Since Feb 18, 2026