{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-97536", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-24T16:01:01.153Z", "datePublished": "2026-09-25T10:21:34.991Z", "dateUpdated": "2026-10-21T12:53:11.632Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:53:11.632Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Fix use-after-free of qpair work on queue teardown\n\nThe response queue MSI-X handler qla2xxx_msix_rsp_q() schedules\nqla_do_work() via queue_work(ha->wq, &qpair->q_work). qla_do_work()\ndereferences the qpair (vha, rsp) and takes qpair->qp_lock.\n\nDuring teardown, qla2xxx_delete_qpair() deletes the response queue, which\ncalls free_irq() in qla25xx_free_rsp_que(), and then frees the queue and\nthe qpair. free_irq() waits for running hardirq handlers but does not\ncancel work already placed on ha->wq. A still-pending q_work then runs\nqla_do_work() against the freed qpair and response queue, causing a\nuse-after-free. This is especially likely during full adapter teardown,\nwhere destroy_workqueue(ha->wq) forces pending work to run after the queue\npairs have been freed.\n\nFlush the work item with cancel_work_sync() in qla25xx_free_rsp_que()\nafter free_irq() has released the interrupt (so no new work can be\nqueued) and before the response queue and qpair memory are freed (so the\nflushed handler still sees valid memory). Guard on rsp->qpair and ha->wq\nto match the INIT_WORK() condition and avoid operating on an\nuninitialized work_struct." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:A - qla2xxx_msix_rsp_q() queue_work()s &qpair->q_work when firmware posts FC/FCoE response-queue IOCBs (STATUS_TYPE/FCP_RSP, LOGINOUT, CT/ELS); qla25xx_free_rsp_que() is reached from qla2xxx_delete_qpair() via qla25xx_delete_rsp_que(). IS_CNA_CAPABLE QLogic CNAs speak FCoE on the SAN fabric, an L2/adjacent transport not a routable IP service.\nAC:H - The UAF fires only when qla25xx_free_rsp_que() free_irq()s then kfree()s rsp and qla2xxx_delete_qpair() kfree()s the qpair while q_work is still queued. Those run from qla24xx_vport_delete() (fc_vport sysfs S_IWUSR) or qla2x00_free_device() after scsi_remove_host, a victim qpair/adapter teardown a fabric peer cannot initiate.\nPR:N - qla2xxx_msix_rsp_q() handles unauthenticated Fibre Channel/FCoE firmware completions in IRQ context with no capable() or Linux credential check, so a SAN N_Port needs no account on the victim. The teardown path is victim-side and does not grant the fabric attacker host privileges.\nUI:N - qla2xxx_msix_rsp_q() schedules q_work automatically on response-queue interrupts. Concurrent qpair teardown in qla24xx_vport_delete() or qla2x00_remove_one()->qla2x00_free_device() is driver/NPIV/PCI lifecycle, not a victim mount or open of attacker-supplied media.\nS:U - kfree of struct qla_qpair and struct rsp_que and the later qla_do_work() use-after-free stay inside the host kernel qla2xxx driver and do not cross a VM, IOMMU, or other separate security-authority boundary.\nC:H - After kfree(qpair) and kfree(rsp), qla_do_work() container_of()s the freed qpair, loads qpair->vha and qpair->rsp, then qla24xx_process_response_queue() reads the dangling rsp ring/IOCBs. That kernel heap use-after-free enables disclosure of reused object contents.\nI:H - qla_do_work() takes spin_lock_irqsave(&qpair->qp_lock) on the freed qpair and qla24xx_process_response_queue() writes rsp->ring_index and completion state through dangling rsp/req pointers, yielding a kernel write and control-flow hijack primitive.\nA:H - Use-after-free of qpair from qla_do_work() produces a kernel oops or panic even when not fully exploited. qla2x00_free_device() calls destroy_workqueue(ha->wq) after qla25xx_delete_queues() has already kfree'd the qpairs, forcing pending q_work to run against freed memory." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/scsi/qla2xxx/qla_mid.c" ], "versions": [ { "version": "68ca949cdb04b4dc71451a999148fbc5f187a220", "lessThan": "9bd063c082ef0475dfc28c46f607aa3e90fe13d7", "status": "affected", "versionType": "git" }, { "version": "68ca949cdb04b4dc71451a999148fbc5f187a220", "lessThan": "dd6c14db0dbb7774278e62c8114902f953540932", "status": "affected", "versionType": "git" }, { "version": "68ca949cdb04b4dc71451a999148fbc5f187a220", "lessThan": "1710a69fd74d0b4bdfcc57c3309b1c4057f70d85", "status": "affected", "versionType": "git" }, { "version": "68ca949cdb04b4dc71451a999148fbc5f187a220", "lessThan": "f1f4d1cb93eeeb250eac9405121933e268eefbd3", "status": "affected", "versionType": "git" }, { "version": "68ca949cdb04b4dc71451a999148fbc5f187a220", "lessThan": "19788a55cab61d78e33e0914a5a31d27843e8a4a", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/scsi/qla2xxx/qla_mid.c" ], "versions": [ { "version": "2.6.31", "status": "affected" }, { "version": "0", "lessThan": "2.6.31", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.7", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.6.160" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.12.112" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.18.53" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "7.2.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "7.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/9bd063c082ef0475dfc28c46f607aa3e90fe13d7" }, { "url": "https://git.kernel.org/stable/c/dd6c14db0dbb7774278e62c8114902f953540932" }, { "url": "https://git.kernel.org/stable/c/1710a69fd74d0b4bdfcc57c3309b1c4057f70d85" }, { "url": "https://git.kernel.org/stable/c/f1f4d1cb93eeeb250eac9405121933e268eefbd3" }, { "url": "https://git.kernel.org/stable/c/19788a55cab61d78e33e0914a5a31d27843e8a4a" } ], "title": "scsi: qla2xxx: Fix use-after-free of qpair work on queue teardown", "x_generator": { "engine": "bippy-1.2.0" } } } }