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VulnerabilityPublished Updated

CVE-2026-13595: Use After Free

Source GCVE Database

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Authoritative record:CVE-2026-13595· Medium 6.8

Not known to be exploited · CVSS 6.8 Medium : update Red Hat Enterprise Linux 10 when convenient.

Data as of 2 Nov 2026, 07:13 UTC

CVSS 3.1 base score
6.8Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.16.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 1 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10util-linuxAffected–Fixed in–
Red Hat Hardened Imagesutil-linux-mainAffected–Fixed in–
Red Hat Enterprise Linux 7util-linuxAffected–Fixed in–
Red Hat Enterprise Linux 8util-linuxAffected–Fixed in–
Red Hat Enterprise Linux 9util-linuxAffected–Fixed in–
Red Hat OpenShift Container Platform 4openshift/ose-rhel-coreos-8Affected–Fixed in–

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.

References

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