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Vulnerability · Published Apr 6, 2020 · Assigned by mitre

CVE-2020-11565

Medium 6.0

In plain English

A medium-severity security flaw in the kernel-tools-libs-devel package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)6.0Medium
Exploit odds (30 days)0.5%top 55.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8kernel-tools-libs-devel4.18.0-240.el8ALSA-2020:4431
Debian:12linux5.5.17-1DEBIAN-CVE-2020-11565
Debian:13linux5.5.17-1DEBIAN-CVE-2020-11565
Debian:14linux5.5.17-1DEBIAN-CVE-2020-11565
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2020-11565
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2020-11565
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2020-11565
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2020-11565

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References