{"id":"AZL-100892","summary":"CVE-2026-89576 affecting package kernel 6.6.150.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm-era: fix shadowed superblock leak on take-snap failure\n\nmetadata_take_snap() bumps the live superblock refcount and then\ndm_tm_shadow_block() allocates a new block for the metadata snapshot.\nIf the subsequent dm_sm_inc_block() of writeset_tree_root or\nera_array_root fails, the function only unlocks the clone and\nreturns.  The newly allocated shadow block is never returned to the\nmetadata space map, so each failed take-snap permanently leaks one\nmetadata block.\n\nFree the clone with dm_sm_dec_block() on those error paths, matching\nthe final step of metadata_drop_snap().","modified":"2026-09-13T06:06:36Z","published":"2026-09-11T20:19:41Z","upstream":["CVE-2026-89576"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89576"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"6.6.150.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-100892.json"}}],"schema_version":"1.9.0"}