CVE-2026-53615
highpriority · track · 0EPSS 0.002 · 7 %ileDEEPSS · scored 2026-10-22
util-linux is a random collection of Linux utilities. Before util-linux 2.41.4, `parse_dos_extended()` in `libblkid/src/partitions/dos.c` computes an extended-partition start sector with 32-bit addition and does not apply the extended-area bounds checks to the first two EBR entries. A local attacker who causes a crafted DOS extended-partition disk image or removable medium to be probed can wrap `cur_start + start` to sector zero and cause libblkid to report a false partition overlapping the MBR. This directly compromises the integrity of the reported partition metadata; disk modification or availability loss requires a separate downstream consumer to act on that metadata. This issue is fixed in 2.41.4.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (6)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-2938util-linux: Mehrere SchwachstellenDeutsch2026-08-19csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in util-linux ausnutzen, um Administratorrechte zu erlangen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder einen Denial-of-Service-Zustand auszulösen.
- WID-SEC-W-2026-3642Meinberg LANTIME: Mehrere SchwachstellenDeutsch2026-09-29csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Meinberg LANTIME ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten offenzulegen oder zu manipulieren, Denial-of-Service-Zustände herbeizuführen, sowie weitere, nicht näher spezifizierte Angriffe zu starten.
sources
Which sources assert this record, and when.
references (5) nvd
External citations — patches, advisories, analysis.
- https://github.com/util-linux/util-linux/commit/05c2dbadf34cc74192287f377904afaaf4061623
- https://github.com/util-linux/util-linux/commit/a2d858176b609ab5b8535021a3af9cd302d23d31
- https://github.com/util-linux/util-linux/commit/e9d544d013267ea86b70ee8ff78abd280e6641af
- https://github.com/util-linux/util-linux/releases/tag/v2.41.4
- https://github.com/util-linux/util-linux/security/advisories/GHSA-h4rw-gv36-wmp5
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