CVE-2026-4897CWE-770denial-of-service

CVE-2026-4897

Medium · published March 26, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
3.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00151 · 3.9th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-03-26T19:16Z
Affected products (7)
ProductVersionsFixed in
freedesktop/polkitall versions—
redhat/openshift_container_platformall versions—
redhat/enterprise_linuxall versions—
redhat/enterprise_linuxall versions—
redhat/enterprise_linuxall versions—
redhat/enterprise_linuxall versions—
redhat/enterprise_linuxall versions—
References (4)
https://access.redhat.com/errata/RHSA-2026:59997 · [email protected]https://access.redhat.com/errata/RHSA-2026:66287 · [email protected]https://access.redhat.com/security/cve/CVE-2026-4897 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2451739 · [email protected]
EPSS history
Timeline
  • 26 MAR 14:56Z
    Polkit: polkit: denial of service via unbounded input processing through standard input
    cvelistv5