CVE-2026-121885 Podman: untrusted image labels allow auto-update to restart arbitrary systemd units
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-121885?
CVE-2026-121885 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, published on 10 Nov 2026.
Official description
A flaw was found in Podman. An attacker can trigger a Denial of Service (DoS) by supplying a container image containing crafted metadata labels. Podman's auto-update mechanism improperly trusts these image labels to determine which system services to restart. If a user runs the malicious container and auto-update processes it, arbitrary system services are restarted with the user's privileges, potentially allowing an attacker to shut down the host system when Podman runs with administrative privileges.
Weakness: CWE-807
Which versions are affected by CVE-2026-121885?
How do I fix CVE-2026-121885?
No fix has been published for CVE-2026-121885 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-121885 being exploited?
There is no known exploitation of CVE-2026-121885 in the wild and no public exploit code.
Sources
Also known as AZL-113342, GHSA-55rm-rwr7-q2wr, GHSA-7fhf-8vg3-7vrp, UBUNTU-CVE-2026-121885.