CVE-2026-13595: Use After Free
Source GCVE Database
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
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 6.8 |
|---|
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 29 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
Patches and advisories
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10util-linux | Affected– | Fixed in– |
| Red Hat Hardened Imagesutil-linux-main | Affected– | Fixed in– |
| Red Hat Enterprise Linux 7util-linux | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8util-linux | Affected– | Fixed in– |
| Red Hat Enterprise Linux 9util-linux | Affected– | Fixed in– |
| Red Hat OpenShift Container Platform 4openshift/ose-rhel-coreos-8 | Affected– | 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
- nvd.nist.gov/vuln/detail/CVE-2026-13595 (opens in a new tab)
- github.com/util-linux/util-linux/commit/c0186f14fbdb02f64c8e0ba701ce727ea764ff4c (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:26573 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:93461 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-13595 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2494101 (opens in a new tab)