CVE-2026-13595
Published:June 29, 2026
Updated:June 29, 2026
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.
Affected Packages
https://github.com/util-linux/util-linux.git (GITHUB):
Affected version(s) >=v2.42 <v2.42.2Fix Suggestion:
Update to version v2.42.2https://github.com/util-linux/util-linux.git (GITHUB):
Affected version(s) >=v2.2 <v2.41.5Fix Suggestion:
Update to version v2.41.5Related Resources (3)
Do you need more information?
Contact UsCVSS v4
Base Score:
7
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.8
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Use After Free
EPSS
Base Score:
0.13