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VulnerabilityPublished Updated

CVE-2026-13595: Red Hat Enterprise Linux 10 · Use After Free

Affects Red Hat Enterprise Linux 10Source CVE Database V5

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Not known to be exploited · CVSS 6.8 Medium.

Data as of 13 Nov 2026, 03:49 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
EPSS
0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
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 13 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10util-linuxAffected–Fixed in–
Red Hat Enterprise Linux 8util-linuxAffected–Fixed in–
Red Hat Enterprise Linux 9util-linuxAffected–Fixed in–
Red Hat Enterprise Linux 9.8 Extended Update Supportutil-linuxAffected–Fixed in–
Red Hat Cost Management On-Premise 1costmanagement/costmanagement-ui-rhel10Affected–Fixed in–
Red Hat Hardened Imagesutil-linux-mainAffected–Fixed in–

AI-suggested

Red Hat has released an update for Red Hat Hardened Images including util-linux packages (version 2.42.2-1.hum1) that address this vulnerability. Users should apply the provided RPM updates to remediate the issue. For detailed update instructions, refer to the Red Hat advisory at https://access.redhat.com/errata/RHSA-2026:26573. Patch status is confirmed as an official fix available from Red Hat.

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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