EUVD-2025-21350CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
4Tags
Description
A flaw was found in polkit. When processing an XML policy with 32 or more nested elements in depth, an out-of-bounds write can be triggered. This issue can lead to a crash or other unexpected behavior, and arbitrary code execution is not discarded. To exploit this flaw, a high-privilege account is needed as it's required to place the malicious policy file properly.
Analysis
A flaw was found in polkit. When processing an XML policy with 32 or more nested elements in depth, an out-of-bounds write can be triggered. This issue can lead to a crash or other unexpected behavior, and arbitrary code execution is not discarded. To exploit this flaw, a high-privilege account is needed as it's required to place the malicious policy file properly.
Technical Context
An out-of-bounds memory access occurs when code reads from or writes to memory locations outside the intended buffer boundaries. This vulnerability is classified as Out-of-bounds Write (CWE-787).
Affected Products
Affected products: Redhat Openshift Container Platform 4.0, Redhat Enterprise Linux 6.0
Remediation
A vendor patch is available — apply it immediately. Implement proper bounds checking on all array and buffer accesses. Use memory-safe languages or static analysis tools to detect OOB issues.
Priority Score
Vendor Status
Ubuntu
Priority: Low| Release | Status | Version |
|---|---|---|
| trusty | needs-triage | - |
| xenial | needs-triage | - |
| bionic | needs-triage | - |
| focal | needs-triage | - |
| jammy | needs-triage | - |
| noble | needs-triage | - |
| upstream | needs-triage | - |
| plucky | ignored | end of life, was needs-triage |
| questing | needs-triage | - |
Debian
Bug #1109334| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| bullseye (security), bullseye | vulnerable | 0.105-31+deb11u1 | - |
| bookworm | vulnerable | 122-3 | - |
| trixie | vulnerable | 126-2 | - |
| forky, sid | fixed | 127-2 | - |
| (unstable) | fixed | 127-1 | unimportant |
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External POC / Exploit Code
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