Double Free Affecting runc package, versions <4:1.2.9-4.module+el8.10.0+40133+32c21f88


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.81% (53rd percentile)

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  • Snyk IDSNYK-ROCKY8-RUNC-17961496
  • published14 Jul 2026
  • disclosed7 May 2026

Introduced: 7 May 2026

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

How to fix?

Upgrade Rocky-Linux:8 runc to version 4:1.2.9-4.module+el8.10.0+40133+32c21f88 or higher.
This issue was patched in RLSA-2026:38504.

NVD Description

Note: Versions mentioned in the description apply only to the upstream runc package and not the runc package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 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