CVE-2026-123876: fallo de gravedad media en Red Hat Enterprise Linux 10
Podman: containers-common: containers-common: default seccomp af_vsock/netlink_audit deny rules bypassable via 32-bit truncation
Publicada el
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13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 4.4epss 0.2%
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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Productos afectados
Red Hat · Red Hat Enterprise Linux 10Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat Hardened ImagesRed Hat · Red Hat OpenShift Container Platform 4Red Hat · Red Hat OpenShift Container Platform 5CVEs relacionadas — Red Hat Enterprise Linux 10
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Referencias
https://access.redhat.com/security/cve/CVE-2026-123876https://bugzilla.redhat.com/show_bug.cgi?id=2566536https://github.com/podman-container-tools/container-libs/issues/1248https://github.com/podman-container-tools/container-libs/pull/1249https://www.openwall.com/lists/oss-security/2026/10/27/3