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scsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state()

Type: advisorySource: Official CVE List1 source record

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.

Announced Group revision 1
Original source ↗

CVE-2026-89852

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-89852

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4d4df1932b6b116aecc81039066fec27f2050762",
        "lessThan": "f8fc5cc6b3284506c6ab83c822c48133377668bb",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4d4df1932b6b116aecc81039066fec27f2050762",
        "lessThan": "f29695b1138ae2539c5cd6cdaba9b1b072aaa81a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4d4df1932b6b116aecc81039066fec27f2050762",
        "lessThan": "13d645a2cdb224d27205368f3e3c68bb160daf97",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4d4df1932b6b116aecc81039066fec27f2050762",
        "lessThan": "2f847f06bb223aa895eea91fc9e5e2d6314038eb",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4d4df1932b6b116aecc81039066fec27f2050762",
        "lessThan": "1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4d4df1932b6b116aecc81039066fec27f2050762",
        "lessThan": "e6cfb1ee18336aab41a0941d6d3ea5009aaafc05",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4d4df1932b6b116aecc81039066fec27f2050762",
        "lessThan": "9f31de4d07e4cde91dfc24522993a5fbb4d67083",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4d4df1932b6b116aecc81039066fec27f2050762",
        "lessThan": "9efaa782845b4d5fb3e01242be0d06ebc7428d8f",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/scsi/qla2xxx/qla_mbx.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.26"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.26",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.270",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.110",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.51",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.5",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/scsi/qla2xxx/qla_mbx.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-89852

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#36303 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2026-89852 · Revision 1Source updated