Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
Affects Red HatSource GCVE Database
Not known to be exploited · CVSS 5.5 Medium.
Data as of 29 Oct 2026, 09:16 UTC
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 26 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10polkit | Affected– | Fixed in– |
| Red Hat Hardened Imagespolkit-main | Affected– | Fixed in– |
| Red Hat Enterprise Linux 6polkit | Affected– | Fixed in– |
| Red Hat Enterprise Linux 7polkit | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8polkit | Affected– | Fixed in– |
| Red Hat Enterprise Linux 9polkit | Affected– | 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
- access.redhat.com/errata/RHSA-2026:66287 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-4897 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-85498 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- images.redhat.com (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_66287.json (opens in a new tab)