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CVE-2026-4897VulnerabilityPublished Updated

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Affects Red HatSource GCVE Database

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Authoritative record:CVE-2026-4897· Medium 5.5

Not known to be exploited · CVSS 5.5 Medium.

Data as of 29 Oct 2026, 09:16 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10polkitAffected–Fixed in–
Red Hat Hardened Imagespolkit-mainAffected–Fixed in–
Red Hat Enterprise Linux 6polkitAffected–Fixed in–
Red Hat Enterprise Linux 7polkitAffected–Fixed in–
Red Hat Enterprise Linux 8polkitAffected–Fixed in–
Red Hat Enterprise Linux 9polkitAffected–Fixed in–

AI-suggested

Currently, there is no available mitigation that meets Red Hat's criteria for ease of use, applicability, or stability. Users should monitor Red Hat advisories for updates and apply any future patches when released. No immediate action is required beyond applying updates once they become available.

Description

A denial of service vulnerability exists in polkit's polkit-agent-helper-1 setuid binary, where a local user can cause an out-of-memory condition by providing excessively long input via standard input. This flaw can lead to system unavailability due to memory exhaustion. The issue is rated as moderate severity and affects Red Hat Hardened Images RPMs. No official fix has been released yet, and mitigation options are currently unavailable or do not meet Red Hat's criteria for deployment.

References

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