{"id":"CVE-2026-89852","summary":"scsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state()","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":"2026-09-18T03:48:33.680702171Z","published":"2026-09-16T10:31:26.012Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89852.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/13d645a2cdb224d27205368f3e3c68bb160daf97"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2f847f06bb223aa895eea91fc9e5e2d6314038eb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9efaa782845b4d5fb3e01242be0d06ebc7428d8f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9f31de4d07e4cde91dfc24522993a5fbb4d67083"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e6cfb1ee18336aab41a0941d6d3ea5009aaafc05"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f29695b1138ae2539c5cd6cdaba9b1b072aaa81a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f8fc5cc6b3284506c6ab83c822c48133377668bb"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89852.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89852"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4d4df1932b6b116aecc81039066fec27f2050762"},{"fixed":"f8fc5cc6b3284506c6ab83c822c48133377668bb"},{"fixed":"f29695b1138ae2539c5cd6cdaba9b1b072aaa81a"},{"fixed":"13d645a2cdb224d27205368f3e3c68bb160daf97"},{"fixed":"2f847f06bb223aa895eea91fc9e5e2d6314038eb"},{"fixed":"1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79"},{"fixed":"e6cfb1ee18336aab41a0941d6d3ea5009aaafc05"},{"fixed":"9f31de4d07e4cde91dfc24522993a5fbb4d67083"},{"fixed":"9efaa782845b4d5fb3e01242be0d06ebc7428d8f"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89852.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.26"},{"fixed":"5.10.270"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.221"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.188"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.51"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89852.json"}}],"schema_version":"1.9.0"}