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.
Problem types
Product status
Any version
Timeline
| 2025-07-11: | Reported to Red Hat. |
| 2025-07-11: | Made public. |
Credits
Red Hat would like to thank Mohamed Maatallah (Independent security researcher) for reporting this issue.
References
access.redhat.com/security/cve/CVE-2025-7519
bugzilla.redhat.com/show_bug.cgi?id=2379675 (RHBZ#2379675)
github.com/...ommit/107d3801361b9f9084f78710178e683391f1d245
github.com/polkit-org/polkit/pull/570