CVE-2026-123876
Public on 2026-11-06
Modified on 2026-11-07
Description
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.
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2023 | aardvark-dns | Not Affected | ||
| Amazon Linux 2027 Preview | aardvark-dns | Not Affected | ||
| Amazon Linux 2023 | buildah | Not Affected | ||
| Amazon Linux 2027 Preview | buildah | Not Affected | ||
| Amazon Linux 2023 | containers-common | Pending Fix | ||
| Amazon Linux 2027 Preview | containers-common | Pending Fix | ||
| Amazon Linux 2023 | netavark | Not Affected | ||
| Amazon Linux 2027 Preview | netavark | Not Affected |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 4.4 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |