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CVE-2026-89852

scsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state()

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, and 2 more
None on Exploit-DB, Metasploit or GitHub

Summary

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.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From 4d4df1932b6b116aecc81039066fec27f2050762 · fixed in f8fc5cc6b3284506c6ab83c822c48133377668bb; From 4d4df1932b6b116aecc81039066fec27f2050762 · fixed in f29695b1138ae2539c5cd6cdaba9b1b072aaa81a; From 4d4df1932b6b116aecc81039066fec27f2050762 · fixed in 13d645a2cdb224d27205368f3e3c68bb160daf97; From 4d4df1932b6b116aecc81039066fec27f2050762 · fixed in 2f847f06bb223aa895eea91fc9e5e2d6314038eb; From 4d4df1932b6b116aecc81039066fec27f2050762 · fixed in 1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79; From 4d4df1932b6b116aecc81039066fec27f2050762 · fixed in e6cfb1ee18336aab41a0941d6d3ea5009aaafc05; From 4d4df1932b6b116aecc81039066fec27f2050762 · fixed in 9f31de4d07e4cde91dfc24522993a5fbb4d67083; From 4d4df1932b6b116aecc81039066fec27f2050762 · fixed in 9efaa782845b4d5fb3e01242be0d06ebc7428d8f

  • Linux Linux

    2.6.26

  • KernelLinux

    From 2.6.26 · fixed in 5.10.270; From 5.11.0 · fixed in 5.15.221; From 5.16.0 · fixed in 6.1.188; From 6.2.0 · fixed in 6.6.157; From 6.7.0 · fixed in 6.12.110; From 6.13.0 · fixed in 6.18.51; From 6.19.0 · fixed in 7.2.5

References 8

git.kernel.org