{"id":"AZL-100172","summary":"CVE-2026-80928 affecting package kernel 6.6.150.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmack: fix cred UAF in smack_file_send_sigiotask()\n\nWhen inspecting the credentials of another task, objective credentials\n(-\u003ereal_cred, accessed with __task_cred()) must always be used.\n\nAccessing -\u003ecred on a non-current task is forbidden unless that task is\nbeing created or destroyed; a task is allowed to change its own -\u003ecred\npointer with no synchronization, and changing -\u003ecred should only affect the\ncurrent syscall.\n\nsmack_file_send_sigiotask() was accessing both sets of credentials: First\ntsk-\u003ecred, then __task_cred(tsk).\n\nFix it, always access the objective credentials here.\n\nI have tested that this bug can lead to a KASAN-reported UAF of struct cred\nin smack_file_send_sigiotask(), and that this fix prevents the race.","modified":"2026-09-13T06:06:36Z","published":"2026-09-11T20:18:56Z","upstream":["CVE-2026-80928"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80928"}],"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-100172.json"}}],"schema_version":"1.9.0"}