Memory Leak Affecting linux-qemu-melange package, versions <6.18.16-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.34% (26th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-LINUXQEMUMELANGE-15338299
  • published24 Feb 2026
  • disclosed10 Mar 2021

Introduced: 10 Mar 2021

CVE-2021-20265  (opens in a new tab)
CWE-401  (opens in a new tab)

How to fix?

Upgrade Chainguard linux-qemu-melange to version 6.18.16-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-qemu-melange package and not the linux-qemu-melange package as distributed by Chainguard. See How to fix? for Chainguard 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 Base Scores

version 3.1