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scsi: qla2xxx: Avoid double completion in async IOCB timeout

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Avoid double completion in async IOCB timeout qla2x00_async_iocb_timeout() tries to abort a timed-out async IOCB. When qla24xx_async_abort_cmd() fails, both the SRB_LOGIN_CMD path and the SRB_CTRL_VP/default path scan outstanding_cmds[] for the SRB and then call sp->done(sp, QLA_FUNCTION_TIMEOUT) unconditionally, without checking whether the SRB was actually found and removed. If the response ISR completes the same handle first, it removes the SRB under qp_lock_ptr and runs sp->done() -> complete(sp->comp). The submitter qla24xx_control_vp() wakes from wait_for_completion(), clears sp->comp, drops its reference and returns, reclaiming the on-stack completion. The timer reference keeps the SRB alive across the timeout handler, but not the submitter's stack. The timeout then issues a second sp->done() -> qla_ctrlvp_sp_done(), which evaluates "if (sp->comp) complete(sp->comp)"; with the pointer loaded before the submitter's NULL store, complete() writes into the freed stack frame, a use-after-free. Track whether this path removed the SRB from outstanding_cmds and only call sp->done() when it did, so the command is completed exactly once by whichever path owns it. This mirrors the sp_found guard already used in qla24xx_abort_iocb_timeout().

Announced Group revision 1
Original source ↗

CVE-2026-89847

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-2026-89847

Linux

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

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
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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": "f6145e86d21fccd59bbb87bc1e1eb076658fd79a",
        "lessThan": "71a7b6e3c7f121439f51a058e53d4a8e05b63dec",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f6145e86d21fccd59bbb87bc1e1eb076658fd79a",
        "lessThan": "7257b5e1fb6c9387714f66e01b79ec82b717eede",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f6145e86d21fccd59bbb87bc1e1eb076658fd79a",
        "lessThan": "f5b660e0b0d9190d8853c795c2522cc5f8c93003",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f6145e86d21fccd59bbb87bc1e1eb076658fd79a",
        "lessThan": "6e217a9482eabbd8b29847be334c74cf468d3544",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f6145e86d21fccd59bbb87bc1e1eb076658fd79a",
        "lessThan": "d6d856c722f40f0694ff755208552e658db6dd42",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f6145e86d21fccd59bbb87bc1e1eb076658fd79a",
        "lessThan": "9fa1d71233a82416492d9c9de9756ebe140fe714",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f6145e86d21fccd59bbb87bc1e1eb076658fd79a",
        "lessThan": "845d4abd92cd2f97551356c8b281ad6e197acb07",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f6145e86d21fccd59bbb87bc1e1eb076658fd79a",
        "lessThan": "bb45bc4bd53c95a7bf6f782577b5ede94c0f8aa8",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/scsi/qla2xxx/qla_init.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.19"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.19",
        "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_init.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-89847

Source reference: /cveMetadata/cveId

Publisher severity

critical

Source reference: /containers/cna/metrics

Event
#36298 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2026-89847 · Revision 1Source updated