CVE-2026-4897: A flaw was found in polkit. A local user can exploit this by providing a specially crafted, excessively long input to…
CVE-2026-4897 · Severity: medium · CVSS 5.5 · Published 2026-03-26
A flaw was found in polkit. A local user can exploit this by providing a specially crafted, excessively long input to the `polkit-agent-helper-1` setuid binary via standard input (stdin). This unbounded input can lead to an out-of-memory (OOM) condition, resulting in a Denial of Service (DoS) for the system.
No. Junglewise Threat Intelligence has no report of CVE-2026-4897 being exploited in the wild.
How severe is CVE-2026-4897?
Medium severity, with a CVSS score of 5.5, published 26 March 2026.
Which products and versions are affected?
Freedesktop Polkit, Redhat Enterprise Linux, Redhat Openshift Container Platform. The advisory does not name versions.
Is there a fix for CVE-2026-4897?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-4897?
Check whether you run Freedesktop Polkit, Redhat Enterprise Linux or Redhat Openshift Container Platform. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.