scsi: qla2xxx: Avoid double completion in async IOCB timeout

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-89847
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-16 11:16:51 UTC
Updated2026-09-16 15:18:12 UTC
DescriptionIn 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().

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected f6145e86d21fccd59bbb87bc1e1eb076658fd79a 71a7b6e3c7f121439f51a058e53d4a8e05b63dec git Not specified
CNA Linux Linux affected f6145e86d21fccd59bbb87bc1e1eb076658fd79a 7257b5e1fb6c9387714f66e01b79ec82b717eede git Not specified
CNA Linux Linux affected f6145e86d21fccd59bbb87bc1e1eb076658fd79a f5b660e0b0d9190d8853c795c2522cc5f8c93003 git Not specified
CNA Linux Linux affected f6145e86d21fccd59bbb87bc1e1eb076658fd79a 6e217a9482eabbd8b29847be334c74cf468d3544 git Not specified
CNA Linux Linux affected f6145e86d21fccd59bbb87bc1e1eb076658fd79a d6d856c722f40f0694ff755208552e658db6dd42 git Not specified
CNA Linux Linux affected f6145e86d21fccd59bbb87bc1e1eb076658fd79a 9fa1d71233a82416492d9c9de9756ebe140fe714 git Not specified
CNA Linux Linux affected f6145e86d21fccd59bbb87bc1e1eb076658fd79a 845d4abd92cd2f97551356c8b281ad6e197acb07 git Not specified
CNA Linux Linux affected f6145e86d21fccd59bbb87bc1e1eb076658fd79a bb45bc4bd53c95a7bf6f782577b5ede94c0f8aa8 git Not specified
CNA Linux Linux affected 4.19 Not specified
CNA Linux Linux unaffected 4.19 semver Not specified
CNA Linux Linux unaffected 5.10.270 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.221 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.188 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.157 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.110 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.51 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.5 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/9fa1d71233a82416492d9c9de9756ebe140fe714 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/bb45bc4bd53c95a7bf6f782577b5ede94c0f8aa8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f5b660e0b0d9190d8853c795c2522cc5f8c93003 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d6d856c722f40f0694ff755208552e658db6dd42 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/71a7b6e3c7f121439f51a058e53d4a8e05b63dec 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/845d4abd92cd2f97551356c8b281ad6e197acb07 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6e217a9482eabbd8b29847be334c74cf468d3544 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/7257b5e1fb6c9387714f66e01b79ec82b717eede 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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