{"id":"AZL-99422","summary":"CVE-2026-80843 affecting package kernel 6.6.150.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: fix xfrm_state_construct() auth-trunc leak\n\nattach_auth_trunc() can allocate x-\u003eaalg while leaving\nx-\u003eprops.aalgo at zero when the selected auth algorithm has no\nsadb_alg_id. One real case is cmac(aes).\n\nxfrm_state_construct() then treats !x-\u003eprops.aalgo as \"no auth\nalgorithm attached yet\" and calls attach_auth(). That overwrites\nx-\u003eaalg and loses the first allocation. Any later failure or teardown\nonly frees the replacement pointer.\n\nCheck whether x-\u003eaalg is already attached instead of inferring that\nstate from x-\u003eprops.aalgo.","modified":"2026-09-05T14:16:56.778397860Z","published":"2026-09-04T16:18:12Z","upstream":["CVE-2026-80843"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80843"}],"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-99422.json"}}],"schema_version":"1.9.0"}