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🛡️ CVE-2026-27456 on Ubuntu 24.04 (Root.io) — rootio-util-linux

🟡 CVSS 5.0 — Medium ✅ No Known Exploit OSV
5.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

CVE-2026-27456 in util-linux - Patched by Root

Root has patched CVE-2026-27456 in the util-linux package for Root:Ubuntu:24.04. Multiple fixed versions available.

Distribution advisory

This page covers CVE-2026-27456 as tracked by Ubuntu 24.04 (Root.io), for the package rootio-util-linux. The fix is available in version 2.39.3-9ubuntu6.5.aikido.2; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is high, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.

Weakness class

ROOT-OS-UBUNTU-2404-CVE-2026-27456 is classified as CWE-59: Link Following. The software follows symbolic or hard links without verifying their target, so a planted link can redirect an operation to a sensitive file.

Affected software

ROOT-OS-UBUNTU-2404-CVE-2026-27456 is recorded against 2 packages.

  • rootio-util-linux (fixed in 2.39.3-9ubuntu6.5.aikido.2)
  • util-linux (fixed in 2.39.3-9ubuntu6.5.aikido.2)

Timeline and source

Published on 19 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

CVE-2026-27456 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity MEDIUM
CVSS Score 5.0
CVSS Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-08-19
Updated 2026-08-20
Modified 2026-08-19
Fix URL N/A

Affected Packages

Software From version Fixed in
rootio-util-linux — 2.39.3-9ubuntu6.5.aikido.2
util-linux — 2.39.3-9ubuntu6.5.aikido.2

References

N/A

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