CVE-2026-13595
Severity CVSS v4.0:
Pending analysis
Type:
CWE-416
Use After Free
Publication date:
29/06/2026
Last modified:
08/07/2026
Description
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.
Impact
Base Score 3.x
6.80
Severity 3.x
MEDIUM
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:* | ||
| cpe:2.3:a:redhat:openshift_container_platform:*:*:*:*:*:*:*:* | 4.0 (including) | 4.22.1 (including) |
| 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:*:*:*:*:*:*:* | ||
| cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:* | 2.42.2 (excluding) |
To consult the complete list of CPE names with products and versions, see this page