Answer in brief
CVE-2026-89847 records a Critical severity (CVSS 9.8) vulnerability in scsi: qla2xxx: Avoid double completion in async IOCB timeout. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=f6145e86d21fccd59bbb87bc1e1eb076658fd79a <71a7b6e3c7f121439f51a058e53d4a8e05b63dec || >=f6145e86d21fccd59bbb87bc1e1eb076658fd79a <7257b5e1fb6c9387714f66e01b79ec82b717eede || >=f6145e86d21fccd59bbb87bc1e1eb076658fd79a <f5b660e0b0d9190d8853c795c2522cc5f8c93003 || >=f6145e86d21fccd59bbb87bc1e1eb076658fd79a <6e217a9482eabbd8b29847be334c74cf468d3544 || >=f6145e86d21fccd59bbb87bc1e1eb076658fd79a <d6d856c722f40f0694ff755208552e658db6dd42 || >=f6145e86d21fccd59bbb87bc1e1eb076658fd79a <9fa1d71233a82416492d9c9de9756ebe140fe714 || >=f6145e86d21fccd59bbb87bc1e1eb076658fd79a <845d4abd92cd2f97551356c8b281ad6e197acb07 || >=f6145e86d21fccd59bbb87bc1e1eb076658fd79a <bb45bc4bd53c95a7bf6f782577b5ede94c0f8aa8 | 71a7b6e3c7f121439f51a058e53d4a8e05b63dec, 7257b5e1fb6c9387714f66e01b79ec82b717eede, f5b660e0b0d9190d8853c795c2522cc5f8c93003, 6e217a9482eabbd8b29847be334c74cf468d3544, d6d856c722f40f0694ff755208552e658db6dd42, 9fa1d71233a82416492d9c9de9756ebe140fe714, 845d4abd92cd2f97551356c8b281ad6e197acb07, bb45bc4bd53c95a7bf6f782577b5ede94c0f8aa8 |
| Linux/Linuxgeneric | 4.19 | Not reported |
Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 16, 2026
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().
Quoted source text, attributed separately from HOL analysis.