CVE-2026-97536scsi: qla2xxx: Fix use-after-free of qpair work on queue teardown
- 7.5HighCVSS base score
- 0.30%Exploitation in 30 daysEPSS · top 77% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix use-after-free of qpair work on queue teardown The response queue MSI-X handler qla2xxx_msix_rsp_q() schedules qla_do_work() via queue_work(ha->wq, &qpair->q_work). qla_do_work() dereferences the qpair (vha, rsp) and takes qpair->qp_lock. During teardown, qla2xxx_delete_qpair() deletes the response queue, which calls free_irq() in qla25xx_free_rsp_que(), and then frees the queue and the qpair. free_irq() waits for running hardirq handlers but does not cancel work already placed on ha->wq. A still-pending q_work then runs qla_do_work() against the freed qpair and response queue, causing a use-after-free. This is especially likely during full adapter teardown, where destroy_workqueue(ha->wq) forces pending work to run after the queue pairs have been freed. Flush the work item with cancel_work_sync() in qla25xx_free_rsp_que() after free_irq() has released the interrupt (so no new work can be queued) and before the response queue and qpair memory are freed (so the flushed handler still sees valid memory). Guard on rsp->qpair and ha->wq to match the INIT_WORK() condition and avoid operating on an uninitialized work_struct.
Timeline
ID reserved
By Linux
- 1 day later
· 1 day later
Published
- 35 days later
· 35 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | High7.5 | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.30% · top 77% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
- affected 68ca949cdb04b4dc71451a999148fbc5f187a220 – < 2089647f81ff5263867ec08589f273899016ad4a
- affected 68ca949cdb04b4dc71451a999148fbc5f187a220 – < bf3f802619eb57cb11c706263dca13255db9f3fd
- affected 68ca949cdb04b4dc71451a999148fbc5f187a220 – < 942ceba876881a57e5157bb30a8a05f99a77ddd8
- affected 68ca949cdb04b4dc71451a999148fbc5f187a220 – < 9bd063c082ef0475dfc28c46f607aa3e90fe13d7
- affected 68ca949cdb04b4dc71451a999148fbc5f187a220 – < dd6c14db0dbb7774278e62c8114902f953540932
- affected 68ca949cdb04b4dc71451a999148fbc5f187a220 – < 1710a69fd74d0b4bdfcc57c3309b1c4057f70d85
- affected 68ca949cdb04b4dc71451a999148fbc5f187a220 – < f1f4d1cb93eeeb250eac9405121933e268eefbd3
- affected 68ca949cdb04b4dc71451a999148fbc5f187a220 – < 19788a55cab61d78e33e0914a5a31d27843e8a4a
- affected 2.6.31
- unaffected < 2.6.31
- unaffected 5.10.273 – ≤ 5.10.*
- unaffected 5.15.224 – ≤ 5.15.*
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.112 – ≤ 6.12.*
- unaffected 6.18.53 – ≤ 6.18.*
- unaffected 7.2.7 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/2089647f81ff5263867ec08589f273899016ad4a (opens in a new tab)
- https://git.kernel.org/stable/c/bf3f802619eb57cb11c706263dca13255db9f3fd (opens in a new tab)
- https://git.kernel.org/stable/c/942ceba876881a57e5157bb30a8a05f99a77ddd8 (opens in a new tab)
- https://git.kernel.org/stable/c/9bd063c082ef0475dfc28c46f607aa3e90fe13d7 (opens in a new tab)
- https://git.kernel.org/stable/c/dd6c14db0dbb7774278e62c8114902f953540932 (opens in a new tab)
- https://git.kernel.org/stable/c/1710a69fd74d0b4bdfcc57c3309b1c4057f70d85 (opens in a new tab)
- https://git.kernel.org/stable/c/f1f4d1cb93eeeb250eac9405121933e268eefbd3 (opens in a new tab)
- https://git.kernel.org/stable/c/19788a55cab61d78e33e0914a5a31d27843e8a4a (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-86844 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://cveledger.app/cve/CVE-2026-97536)Record last updated .