Double Free Affecting golang-src package, versions <0:1.26.3-1.el9_8


Severity

Recommended
0.0
high
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.88% (59th percentile)

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  • Snyk IDSNYK-ALMALINUX9-GOLANGSRC-21747139
  • published27 Oct 2026
  • disclosed14 Jul 2026

Introduced: 14 Jul 2026

CVE-2026-33811  (opens in a new tab)
CWE-415  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 golang-src to version 0:1.26.3-1.el9_8 or higher.
This issue was patched in ALSA-2026:22121.

NVD Description

Note: Versions mentioned in the description apply only to the upstream golang-src package and not the golang-src package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.

References

CVSS Base Scores

version 3.1