CVE-2026-89852
Description
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state() The mbx_cmd_t is allocated on the stack but left uninitialized. qla2x00_mailbox_command() has several early-return paths (PCI permanent failure, device failed, EEH busy, ISP abort pending, mailbox access timeout, purge mbox) that return without writing the input mailbox registers back into mcp->mb[]. qla2x00_get_firmware_state() then unconditionally copies mcp->mb[1..6] (and mb[12]) into the caller's states[] array regardless of the return value. On such a failure the copied values are uninitialized kernel stack memory, which is then exposed to userspace via the fw_state and mpi_fw_state sysfs handlers. Zero the mailbox struct so a failed query yields deterministic zeroed state instead of leaking stack contents.
How to fix
- Linux Linuxf8fc5cc6b3284506c6ab83c822c48133377668bb, f29695b1138ae2539c5cd6cdaba9b1b072aaa81a, 13d645a2cdb224d27205368f3e3c68bb160daf97, 2f847f06bb223aa895eea91fc9e5e2d6314038eb, 1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79, e6cfb1ee18336aab41a0941d6d3ea5009aaafc05, 9f31de4d07e4cde91dfc24522993a5fbb4d67083, 9efaa782845b4d5fb3e01242be0d06ebc7428d8f or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 4d4df1932b6b116aecc81039066fec27f2050762 ≤ v < f8fc5cc6b3284506c6ab83c822c48133377668bb, 4d4df1932b6b116aecc81039066fec27f2050762 ≤ v < f29695b1138ae2539c5cd6cdaba9b1b072aaa81a, 4d4df1932b6b116aecc81039066fec27f2050762 ≤ v < 13d645a2cdb224d27205368f3e3c68bb160daf97, 4d4df1932b6b116aecc81039066fec27f2050762 ≤ v < 2f847f06bb223aa895eea91fc9e5e2d6314038eb, 4d4df1932b6b116aecc81039066fec27f2050762 ≤ v < 1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79, 4d4df1932b6b116aecc81039066fec27f2050762 ≤ v < e6cfb1ee18336aab41a0941d6d3ea5009aaafc05, 4d4df1932b6b116aecc81039066fec27f2050762 ≤ v < 9f31de4d07e4cde91dfc24522993a5fbb4d67083, 4d4df1932b6b116aecc81039066fec27f2050762 ≤ v < 9efaa782845b4d5fb3e01242be0d06ebc7428d8f, 2.6.26 | f8fc5cc6b3284506c6ab83c822c48133377668bb, f29695b1138ae2539c5cd6cdaba9b1b072aaa81a, 13d645a2cdb224d27205368f3e3c68bb160daf97, 2f847f06bb223aa895eea91fc9e5e2d6314038eb, 1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79, e6cfb1ee18336aab41a0941d6d3ea5009aaafc05, 9f31de4d07e4cde91dfc24522993a5fbb4d67083, 9efaa782845b4d5fb3e01242be0d06ebc7428d8f |
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