{"id":"CVE-2026-97527","title":"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","summary":"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 ar…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-366","CWE-416"],"vendor":"Linux","product":"Linux","affected":["Linux >= 875386b98857822b77ac7f95bdf367b70af5b78c < c1ee12eecbab9674fb73c9e00a93fac655d5a5dc","Linux >= 875386b98857822b77ac7f95bdf367b70af5b78c < b211d138cad86f749826d6132db6388eded992d8","Linux >= 875386b98857822b77ac7f95bdf367b70af5b78c < 4d8ad6bc8cc5eff1870cef00a0d611f38f8b6bd0","Linux >= 875386b98857822b77ac7f95bdf367b70af5b78c < 76da0c43c63eb0496649e372ac64466364d0fe7d","Linux 6.6"],"published":"2026-09-25","updated":"2026-10-03","sourceUpdated":"2026-10-03T11:18:01.467","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-97527","references":[{"url":"https://git.kernel.org/stable/c/4d8ad6bc8cc5eff1870cef00a0d611f38f8b6bd0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/76da0c43c63eb0496649e372ac64466364d0fe7d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b211d138cad86f749826d6132db6388eded992d8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c1ee12eecbab9674fb73c9e00a93fac655d5a5dc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97527.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-97527"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541235"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97527"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97527"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97527.mbox"},{"url":"https://git.kernel.org/stable/c/6c71726cdfda93ae169a75c7b1697eb870303125"},{"url":"https://kernelcve.org/list/?q=CVE-2026-97527"}],"tags":["nvd","cve.org","csaf","vex","red-hat","score-dispute"],"epss":0.00344,"epssPercentile":0.27734,"scores":{"nvd":8.8,"vendor":5.3,"cna":8.8},"ingestedAt":"2026-09-25T11:06:38.926Z","slug":"CVE-2026-97527","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, … · updated 2026-10-25 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97527.json)","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":211012,"id":"CVE-2026-97527","ts":1790349124094,"field":"cvss","old":null,"new":"8.8"},{"seq":211011,"id":"CVE-2026-97527","ts":1790349124094,"field":"severity","old":"none","new":"high"}]}