---
cve: "CVE-2026-13595"
severity: "MEDIUM"
cvss: 6.8
epss: "11%"
vendor: "Red Hat"
kev: false
exploited: false
published: "2026-06-29 09:16:28"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-03T10:08:20+02:00"
---

# CVE-2026-13595

> 6.8 MEDIUM · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Gering | warn |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- f44509230b9f8224993b8c6157f85888359a64e1 (Commit)
- c0186f14fbdb02f64c8e0ba701ce727ea764ff4c (Commit)

## Referenzen

- <https://access.redhat.com/errata/RHSA-2026:26573>
- <https://access.redhat.com/security/cve/CVE-2026-13595>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2494101>
- <https://github.com/util-linux/util-linux/commit/c0186f14fbdb02f64c8e0ba701ce727ea764ff4c>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-13595) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_