Low [CVE-2026-4897 +1] Regression in CVE-2026-4897 fix (polkit read_cookie) - stack buffer underflow
This low-severity Red Hat Linux advisory covers CVE-2026-4897 and CVE-2026-85498 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7.
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Summary
No description is available for this CVE. This issue is classified as Low severity because there is no observable effect of the one byte out-of-bounds read.
No information disclosure or affect to integrity has been demonstrated. Red Hat severity: Low — CVSS 3.5 (CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L).
Weakness: CWE-125. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Hardened Images; Red Hat OpenShift Container Platform 4.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: polkit-pkla-compat; Red Hat package: polkit-gnome; Red Hat package: polkit-kde; Red Hat package: polkit-qt.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 53 minutes ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 53 minutes ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the criteria for a mitigation as defined by the Red Hat Product Security team. This flaw remains subject to future review as new information becomes available. Exposure is limited: the defect is reachable only by a local/adjacent low-privileged user interacting with the polkit authentication agent and results at most in a crash (availability) of the affected process.
Official advisory · high-confidence parse· fetched 53 minutes ago·verify at source
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