Resource Exhaustion Affecting kernel-abi-whitelists package, versions <0:3.10.0-1160.21.1.el7


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.06% (31st percentile)

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  • Snyk IDSNYK-RHEL7-KERNELABIWHITELISTS-7975988
  • published14 Sept 2024
  • disclosed24 Jan 2016

Introduced: 24 Jan 2016

CVE-2021-20265  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade RHEL:7 kernel-abi-whitelists to version 0:3.10.0-1160.21.1.el7 or higher.
This issue was patched in RHSA-2021:0856.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-abi-whitelists package and not the kernel-abi-whitelists package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux kernel when a signal was pending. This flaw allows an unprivileged local user to crash the system by exhausting available memory. The highest threat from this vulnerability is to system availability.

CVSS Scores

version 3.1