CVE-2025-7519

Polkit: xml policy file with a large number of nested elements may lead to out-of-bounds write

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.

Remediation

Workaround:

  • There's no known mitigation to this vulnerability other than avoiding the implementation of unknown or untrusted polkit policy files to the system.

Category

6.7
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Vendor Advisory redhat.com
Affected: Red Hat Red Hat Enterprise Linux 10
Affected: Red Hat Red Hat Enterprise Linux 6
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat OpenShift Container Platform 4
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/security/cve/CVE-2025-7519 vendor advisory vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2379675 issue tracking
https://github.com/polkit-org/polkit/commit/107d3801361b9f9084f78710178e683391f1d245 patch
https://github.com/polkit-org/polkit/pull/570 patch

Frequently Asked Questions

What is the severity of CVE-2025-7519?
CVE-2025-7519 has been scored as a medium severity vulnerability.
How to fix CVE-2025-7519?
As a workaround for remediating CVE-2025-7519: There's no known mitigation to this vulnerability other than avoiding the implementation of unknown or untrusted polkit policy files to the system.
Is CVE-2025-7519 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-7519 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-7519?
CVE-2025-7519 affects Red Hat Red Hat Enterprise Linux 10, Red Hat Red Hat Enterprise Linux 6, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat OpenShift Container Platform 4.
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