{"id":"AZL-90200","summary":"CVE-2026-55392 affecting package nilfs-utils 2.2.11-4","details":"NILFS utilities through 2.3.0, fixed in commit 26efb5d, nilfs_sb_is_valid() function fails to validate s_log_block_size field in NILFS2 superblock before bit-shift operations. Attackers supplying crafted NILFS2 images trigger undefined behavior through oversized shifts or out-of-memory conditions, crashing tools like nilfs-tune and dumpseg.","modified":"2026-08-30T05:24:52Z","published":"2026-06-18T19:16:23Z","upstream":["CVE-2026-55392"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55392"}],"affected":[{"package":{"name":"nilfs-utils","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/nilfs-utils"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.2.11-4"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-90200.json"}}],"schema_version":"1.9.0"}