CVE-2026-13595: Red Hat Enterprise Linux 10 · Use After Free
Affects Red Hat Enterprise Linux 10Source CVE Database V5
Not known to be exploited · CVSS 6.8 Medium.
Data as of 13 Nov 2026, 03:49 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 6.8 |
|---|
- 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: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 13 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10util-linux | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8util-linux | Affected– | Fixed in– |
| Red Hat Enterprise Linux 9util-linux | Affected– | Fixed in– |
| Red Hat Enterprise Linux 9.8 Extended Update Supportutil-linux | Affected– | Fixed in– |
| Red Hat Cost Management On-Premise 1costmanagement/costmanagement-ui-rhel10 | Affected– | Fixed in– |
| Red Hat Hardened Imagesutil-linux-main | Affected– | 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
- access.redhat.com/errata/RHSA-2026:26573 (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)
- github.com/util-linux/util-linux/commit/c0186f14fbdb02f64c8e0ba701ce727ea764ff4c (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:93461 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:95365 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:96212 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:97522 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:99119 (opens in a new tab)