{"id":"CVE-2026-89852","published":"2026-09-16T11:16:52.900","lastModified":"2026-09-16T11:16:52.900","description":"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->mb[]. qla2x00_get_firmware_state() then\nunconditionally copies mcp->mb[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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/13d645a2cdb224d27205368f3e3c68bb160daf97","tags":[]},{"url":"https://git.kernel.org/stable/c/1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79","tags":[]},{"url":"https://git.kernel.org/stable/c/2f847f06bb223aa895eea91fc9e5e2d6314038eb","tags":[]},{"url":"https://git.kernel.org/stable/c/9efaa782845b4d5fb3e01242be0d06ebc7428d8f","tags":[]},{"url":"https://git.kernel.org/stable/c/9f31de4d07e4cde91dfc24522993a5fbb4d67083","tags":[]},{"url":"https://git.kernel.org/stable/c/e6cfb1ee18336aab41a0941d6d3ea5009aaafc05","tags":[]},{"url":"https://git.kernel.org/stable/c/f29695b1138ae2539c5cd6cdaba9b1b072aaa81a","tags":[]},{"url":"https://git.kernel.org/stable/c/f8fc5cc6b3284506c6ab83c822c48133377668bb","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}