CVE-2026-13595

A flaw was found in the libblkid library of util-linux. During nested partition probing, the BSD, Minix, Solaris x86, and UnixWare partition probers cache a raw pointer to a parent partition entry in a dynamically allocated array. When subsequent partition additions cause the array to be reallocated, this pointer becomes stale, leading to a heap use-after-free read. An attacker who can present a crafted block device image (for example, via USB insertion or a loop-mounted disk image) can trigger this flaw without user interaction, as libblkid is invoked automatically by udev/udisks as root on block-device hot-plug events. This could lead to limited information disclosure or denial of service.

CVSS v3 6.8 MEDIUM

6.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 4.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:26573	Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-13595	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2494101	Issue Tracking Vendor Advisory
https://github.com/util-linux/util-linux/commit/c0186f14fbdb02f64c8e0ba701ce727ea764ff4c	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:redhat:hardened_images:-:::::::*
	cpe:2.3:a:redhat:openshift_container_platform::::::::
	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:10.0:::::::*

Configuration 2 (hide)

cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-29 09:16

Updated : 2026-08-31 18:17

NVD link : CVE-2026-13595

Mitre link : CVE-2026-13595

CVE.ORG link : CVE-2026-13595

JSON object : View

Products Affected

redhat

enterprise_linux
openshift_container_platform
hardened_images

kernel

util-linux

CWE

CWE-416

Use After Free

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