CVE-2026-85498 (GCVE-0-2026-85498)

Vulnerability from cvelistv5 – Published: 2026-10-29 09:02 – Updated: 2026-10-30 01:19
VLAI
Title
Polkit: regression in cve-2026-4897 fix (polkit read_cookie()) - stack buffer underflow
Summary
A flaw was found in polkit. When processing input that begins with a null byte, an arithmetic error in the authentication agent helper causes an integer underflow during buffer length calculation, resulting in an out-of-bounds memory read. An attacker capable of supplying crafted input can trigger this flaw, potentially causing an application crash and resulting in a Denial of Service (DoS).
Severity
3.5 (Low)
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-29 12:23 UTC
CWE
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1070 records in the last 180 days details
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:66287 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-85498 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2528347 issue-trackingx_refsource_REDHAT
Impacted products
Date Public
2026-09-04 00:00
Credits
Red Hat would like to thank Juthawong Naisanguansee for reporting this issue.
Show details on NVD website
To clipboard 

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}



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