GHSA-RMG2-25HR-Q94V
Vulnerability from github – Published: 2026-09-25 12:31 – Updated: 2026-10-21 15:41In the Linux kernel, the following vulnerability has been resolved:
scsi: qla2xxx: Serialize NVMe unsol ctx list with a per-fcport lock
The fcport->unsol_ctx_head list is modified from several contexts without a common lock. Entries are added in qla2xxx_process_purls_iocb() from the response queue ISR (under the qpair qp_lock), while they are removed from qla2xxx_process_purls_pkt() (DPC/purex worker), qla_nvme_xmt_ls_rsp() (NVMe-FC transport callback) and qla_nvme_release_lsrsp_cmd_kref() (SRB completion). The qpair qp_lock cannot serialize this per-fcport list since multiqueue adapters add entries through different qpairs, so a concurrent add and delete (or two concurrent deletes) can corrupt the list pointers.
Introduce a dedicated per-fcport spinlock, unsol_ctx_lock, initialized in qla2x00_alloc_fcport(), and take it around every list_add_tail()/list_del() on unsol_ctx_head. The add nests under the existing qp_lock; no delete path takes qp_lock, so the lock order is consistent and deadlock free.
{
"affected": [],
"aliases": [
"CVE-2026-97527"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-25T11:17:02Z",
"severity": "HIGH"
},
"details": "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-\u003eunsol_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": "GHSA-rmg2-25hr-q94v",
"modified": "2026-10-21T15:41:35Z",
"published": "2026-09-25T12:31:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97527"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4d8ad6bc8cc5eff1870cef00a0d611f38f8b6bd0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6c71726cdfda93ae169a75c7b1697eb870303125"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/76da0c43c63eb0496649e372ac64466364d0fe7d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b211d138cad86f749826d6132db6388eded992d8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c1ee12eecbab9674fb73c9e00a93fac655d5a5dc"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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