CVE-2026-123876 (GCVE-0-2026-123876)

Vulnerability from cvelistv5 – Published: 2026-11-06 17:38 – Updated: 2026-11-06 21:33
VLAI
Title
Podman: containers-common: containers-common: default seccomp af_vsock/netlink_audit deny rules bypassable via 32-bit truncation
Summary
A flaw was found in the default seccomp profile used by Podman via containers-common. Deny rules for AF_VSOCK and NETLINK_AUDIT compared socket arguments with unmasked 64-bit equality. Because the kernel truncates those int arguments to 32 bits, setting upper bits can bypass the deny rules.
Severity
4.4 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-184 - Incomplete List of Disallowed Inputs
Assigner
redhat CNA
References
Impacted products
Date Public
2026-10-27 00:00
Credits
Red Hat would like to thank Ricardo Branco (SUSE) for reporting this issue.
Show details on NVD website
To clipboard 

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