[ CVE-2026-53615 · Published 14 Oct 2026 ]
Vulnerability in util-linux
[ Description ]Official description
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.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.
[ Advisories ]Government CERT advisories
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CERT-FRCERTFR-2026-AVI-1249
Multiple vulnerabilities in VMware products Translated from French
Multiple vulnerabilities have been discovered in VMware products. They allow an attacker to cause a security problem not specified by the vendor.
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BSI CERT-BundWID-SEC-2026-3642
Meinberg LANTIME: Multiple vulnerabilities Translated from German
[ References ]References
- github.com/util-linux/util-linux/commit/05c2dbadf34cc74192287f377904afaaf4061623
- github.com/util-linux/util-linux/commit/a2d858176b609ab5b8535021a3af9cd302d23d31
- github.com/util-linux/util-linux/commit/e9d544d013267ea86b70ee8ff78abd280e6641af
- github.com/util-linux/util-linux/releases/tag/v2.41.4
- github.com/util-linux/util-linux/security/advisories/GHSA-h4rw-gv36-wmp5