{"id":"AZL-101573","summary":"CVE-2026-89852 affecting package kernel 6.6.150.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state()\n\nThe mbx_cmd_t is allocated on the stack but left uninitialized.\nqla2x00_mailbox_command() has several early-return paths (PCI permanent\nfailure, device failed, EEH busy, ISP abort pending, mailbox access\ntimeout, purge mbox) that return without writing the input mailbox\nregisters back into mcp-\u003emb[]. qla2x00_get_firmware_state() then\nunconditionally copies mcp-\u003emb[1..6] (and mb[12]) into the caller's\nstates[] array regardless of the return value.\n\nOn such a failure the copied values are uninitialized kernel stack\nmemory, which is then exposed to userspace via the fw_state and\nmpi_fw_state sysfs handlers. Zero the mailbox struct so a failed query\nyields deterministic zeroed state instead of leaking stack contents.","modified":"2026-09-18T05:37:08Z","published":"2026-09-16T11:16:52Z","upstream":["CVE-2026-89852"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89852"}],"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-101573.json"}}],"schema_version":"1.9.0"}