CVE-2026-85498Polkit: regression in cve-2026-4897 fix (polkit read_cookie()) - stack buffer underflow
Updated under an hour ago ()
Does this affect you?
It affects Red Hat Hardened Images and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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).
- CVSS
- 3.5 LOW (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- Weakness (CWE)
- CWE-125
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 29, 2026
- First seen by InfoSec Signals
- Oct 29, 2026
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.