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Vulnerability · Published Mar 30, 2021 · Assigned by mitre

CVE-2021-29650

Medium 5.5

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 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.4%top 64.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

An issue was discovered in the Linux kernel before 5.11.11. The netfilter subsystem allows attackers to cause a denial of service (panic) because net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h lack a full memory barrier upon the assignment of a new table value, aka CID-175e476b8cdf.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8kernel-tools-libs-devel4.18.0-348.el8ALSA-2021:4356
Debian:12linux5.10.28-1DEBIAN-CVE-2021-29650
Debian:13linux5.10.28-1DEBIAN-CVE-2021-29650
Debian:14linux5.10.28-1DEBIAN-CVE-2021-29650
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-29650
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-29650
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-29650

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References