CVE-2026-97527

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-97527", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-24T16:01:01.152Z", "datePublished": "2026-09-25T10:21:29.521Z", "dateUpdated": "2026-10-21T12:53:02.776Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:53:02.776Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Serialize NVMe unsol ctx list with a per-fcport lock\n\nThe fcport->unsol_ctx_head list is modified from several contexts without\na common lock. Entries are added in qla2xxx_process_purls_iocb() from the\nresponse queue ISR (under the qpair qp_lock), while they are removed from\nqla2xxx_process_purls_pkt() (DPC/purex worker), qla_nvme_xmt_ls_rsp()\n(NVMe-FC transport callback) and qla_nvme_release_lsrsp_cmd_kref() (SRB\ncompletion). The qpair qp_lock cannot serialize this per-fcport list since\nmultiqueue adapters add entries through different qpairs, so a concurrent\nadd and delete (or two concurrent deletes) can corrupt the list pointers.\n\nIntroduce a dedicated per-fcport spinlock, unsol_ctx_lock, initialized in\nqla2x00_alloc_fcport(), and take it around every list_add_tail()/list_del()\non unsol_ctx_head. The add nests under the existing qp_lock; no delete path\ntakes qp_lock, so the lock order is consistent and deadlock free."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:A - qla24xx_msix_rsp_q/qla2xxx_msix_rsp_q \u2192 qla24xx_process_response_queue dispatches PT_LS4_UNSOL (0x56) into qla2xxx_process_purls_iocb, which list_add_tail's uctx onto fcport->unsol_ctx_head. Those are unsolicited NVMe-FC LS frames a SAN N_Port put on the wire. FC/FCoE is a non-routable fabric, so Adjacent.\nAC:L - A fabric peer floods concurrent PT_LS4_UNSOL so ISR list_add_tail in qla2xxx_process_purls_iocb (qp_lock only; different qpairs on MQ) races list_del in qla2xxx_process_purls_pkt (DPC; nvme_fc_rcv_ls_req -E2BIG on oversized LS), qla_nvme_xmt_ls_rsp, or qla_nvme_release_lsrsp_cmd_kref. The attacker drives both sides.\nPR:N - qla2xxx_process_purls_iocb only needs qla2x00_find_fcport_by_nportid to match a non-deleted N_Port that completed NVMe PRLI (nvme_remote_port). The PT_LS4_UNSOL path has no uid, capability, or EDIF check; fabric zoning is network access, not a host privilege.\nUI:N - PT_LS4_UNSOL is consumed in the MSI-X response-queue handler and queued via qla24xx_queue_purex_item to PROCESS_PUREX_IOCB; nvme_fc later calls qla_nvme_xmt_ls_rsp from lsrcv_work. No victim mount, open, or other interactive step is required.\nS:U - Corrupting fcport->unsol_ctx_head and the qla_nvme_unsol_ctx list nodes stays inside the host kernel that owns the qla2xxx adapter. This is not a VM escape, IOMMU bypass, or other cross-authority impact.\nC:H - Unlocked list_add_tail versus list_del on unsol_ctx_head can leave head->prev pointing at a qla_nvme_unsol_ctx that qla2xxx_process_purls_pkt already kfree'd, so the next add writes through freed slab. Reuse of that uctx is an arbitrary kernel read primitive.\nI:H - The same race lets list_del write prev/next of a neighbor uctx or the list head through a stale pointer, and a second delete of a poisoned node writes LIST_POISON or a reused object, which is a kernel write and control-flow hijack primitive.\nA:H - list_del on a corrupted unsol_ctx_head hits LIST_POISON or a bad dereference in qla2xxx_process_purls_pkt, qla_nvme_xmt_ls_rsp, or qla_nvme_release_lsrsp_cmd_kref and oopses or panics the host, taking down the NVMe-FC path."}]}], "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_def.h", "drivers/scsi/qla2xxx/qla_init.c", "drivers/scsi/qla2xxx/qla_nvme.c"], "versions": [{"version": "875386b98857822b77ac7f95bdf367b70af5b78c", "lessThan": "6c71726cdfda93ae169a75c7b1697eb870303125", "status": "affected", "versionType": "git"}, {"version": "875386b98857822b77ac7f95bdf367b70af5b78c", "lessThan": "c1ee12eecbab9674fb73c9e00a93fac655d5a5dc", "status": "affected", "versionType": "git"}, {"version": "875386b98857822b77ac7f95bdf367b70af5b78c", "lessThan": "b211d138cad86f749826d6132db6388eded992d8", "status": "affected", "versionType": "git"}, {"version": "875386b98857822b77ac7f95bdf367b70af5b78c", "lessThan": "4d8ad6bc8cc5eff1870cef00a0d611f38f8b6bd0", "status": "affected", "versionType": "git"}, {"version": "875386b98857822b77ac7f95bdf367b70af5b78c", "lessThan": "76da0c43c63eb0496649e372ac64466364d0fe7d", "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_def.h", "drivers/scsi/qla2xxx/qla_init.c", "drivers/scsi/qla2xxx/qla_nvme.c"], "versions": [{"version": "6.6", "status": "affected"}, {"version": "0", "lessThan": "6.6", "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": "6.6", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/6c71726cdfda93ae169a75c7b1697eb870303125"}, {"url": "https://git.kernel.org/stable/c/c1ee12eecbab9674fb73c9e00a93fac655d5a5dc"}, {"url": "https://git.kernel.org/stable/c/b211d138cad86f749826d6132db6388eded992d8"}, {"url": "https://git.kernel.org/stable/c/4d8ad6bc8cc5eff1870cef00a0d611f38f8b6bd0"}, {"url": "https://git.kernel.org/stable/c/76da0c43c63eb0496649e372ac64466364d0fe7d"}], "title": "scsi: qla2xxx: Serialize NVMe unsol ctx list with a per-fcport lock", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/scsi/qla2xxx/qla_def.h", "drivers/scsi/qla2xxx/qla_init.c", "drivers/scsi/qla2xxx/qla_nvme.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "6c71726cdfda93ae169a75c7b1697eb870303125", "status": "affected", "version": "875386b98857822b77ac7f95bdf367b70af5b78c", "versionType": "git"}, {"lessThan": "c1ee12eecbab9674fb73c9e00a93fac655d5a5dc", "status": "affected", "version": "875386b98857822b77ac7f95bdf367b70af5b78c", "versionType": "git"}, {"lessThan": "b211d138cad86f749826d6132db6388eded992d8", "status": "affected", "version": "875386b98857822b77ac7f95bdf367b70af5b78c", "versionType": "git"}, {"lessThan": "4d8ad6bc8cc5eff1870cef00a0d611f38f8b6bd0", "status": "affected", "version": "875386b98857822b77ac7f95bdf367b70af5b78c", "versionType": "git"}, {"lessThan": "76da0c43c63eb0496649e372ac64466364d0fe7d", "status": "affected", "version": "875386b98857822b77ac7f95bdf367b70af5b78c", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/scsi/qla2xxx/qla_def.h", "drivers/scsi/qla2xxx/qla_init.c", "drivers/scsi/qla2xxx/qla_nvme.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.6"}, {"lessThan": "6.6", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.112", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.53", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.7", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Serialize NVMe unsol ctx list with a per-fcport lock\n\nThe fcport->unsol_ctx_head list is modified from several contexts without\na common lock. Entries are added in qla2xxx_process_purls_iocb() from the\nresponse queue ISR (under the qpair qp_lock), while they are removed from\nqla2xxx_process_purls_pkt() (DPC/purex worker), qla_nvme_xmt_ls_rsp()\n(NVMe-FC transport callback) and qla_nvme_release_lsrsp_cmd_kref() (SRB\ncompletion). The qpair qp_lock cannot serialize this per-fcport list since\nmultiqueue adapters add entries through different qpairs, so a concurrent\nadd and delete (or two concurrent deletes) can corrupt the list pointers.\n\nIntroduce a dedicated per-fcport spinlock, unsol_ctx_lock, initialized in\nqla2x00_alloc_fcport(), and take it around every list_add_tail()/list_del()\non unsol_ctx_head. The add nests under the existing qp_lock; no delete path\ntakes qp_lock, so the lock order is consistent and deadlock free."}], "id": "CVE-2026-97527", "lastModified": "2026-10-21T13:21:11.907", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-09-25T11:17:02.873", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4d8ad6bc8cc5eff1870cef00a0d611f38f8b6bd0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6c71726cdfda93ae169a75c7b1697eb870303125"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/76da0c43c63eb0496649e372ac64466364d0fe7d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b211d138cad86f749826d6132db6388eded992d8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c1ee12eecbab9674fb73c9e00a93fac655d5a5dc"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: scsi: qla2xxx: Serialize NVMe unsol ctx list with a per-fcport lock", "id": "2541235", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541235"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-366", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nscsi: qla2xxx: Serialize NVMe unsol ctx list with a per-fcport lock\nThe fcport->unsol_ctx_head list is modified from several contexts without\na common lock. Entries are added in qla2xxx_process_purls_iocb() from the\nresponse queue ISR (under the qpair qp_lock), while they are removed from\nqla2xxx_process_purls_pkt() (DPC/purex worker), qla_nvme_xmt_ls_rsp()\n(NVMe-FC transport callback) and qla_nvme_release_lsrsp_cmd_kref() (SRB\ncompletion). The qpair qp_lock cannot serialize this per-fcport list since\nmultiqueue adapters add entries through different qpairs, so a concurrent\nadd and delete (or two concurrent deletes) can corrupt the list pointers.\nIntroduce a dedicated per-fcport spinlock, unsol_ctx_lock, initialized in\nqla2x00_alloc_fcport(), and take it around every list_add_tail()/list_del()\non unsol_ctx_head. The add nests under the existing qp_lock; no delete path\ntakes qp_lock, so the lock order is consistent and deadlock free.", "A flaw was found in the Linux kernel's qla2xxx driver. An attacker communicating over a Fibre Channel storage network can cause a Denial of Service (DoS) by triggering concurrent processing of unsolicited Non-Volatile Memory Express (NVMe) requests. Because the driver fails to properly synchronize list modifications across multiple queues, this race condition corrupts internal memory pointers and leads to a kernel crash."], "name": "CVE-2026-97527", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-97527\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-97527\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97527.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[875386b98857822b77ac7f95bdf367b70af5b78c,b211d138cad86f749826d6132db6388eded992d8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[875386b98857822b77ac7f95bdf367b70af5b78c,4d8ad6bc8cc5eff1870cef00a0d611f38f8b6bd0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[875386b98857822b77ac7f95bdf367b70af5b78c,76da0c43c63eb0496649e372ac64466364d0fe7d)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.6"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.6)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.53,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.7,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-25T15:30:06.715920+00:00", "updated": "2026-10-01T14:00:10.338175+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}