{"id":"AZL-108198","summary":"CVE-2026-53615 affecting package util-linux 2.40.2-6","details":"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.","modified":"2026-10-15T14:17:17.053360611Z","published":"2026-10-14T16:17:46Z","upstream":["CVE-2026-53615"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53615"}],"affected":[{"package":{"name":"util-linux","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/util-linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.40.2-6"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-108198.json"}}],"schema_version":"1.9.0"}