AZL-108198
CVE-2026-53615 affecting package util-linux 2.40.2-6
Published Oct 14, 2026 · updated Oct 15, 2026
util-linux is a random collection of Linux utilities. Before util-linux 2.41.4, in 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 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.
Code
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No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Oct 14, 2026 · OSV.dev
Detected
util-linux is a random collection of Linux utilities. Before util-linux 2.41.4, in 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 to sector zero and cause libblkid to report a false parti
Oct 15, 2026 · OSV.dev
Updated
util-linux is a random collection of Linux utilities. Before util-linux 2.41.4, in 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 to sector zero and cause libblkid to report a false parti
Affected
- Azure Linux:3 util-linuxversion unspecified