GHSA-CP4G-4CX8-R2FQ
Vulnerability from github – Published: 2026-09-17 18:32 – Updated: 2026-09-17 18:32In the Linux kernel, the following vulnerability has been resolved:
nvme-fc: unmap cmd_iu DMA on rsp_iu mapping failure in init_request
__nvme_fc_init_request() maps cmd_iu and then rsp_iu for DMA. If the rsp_iu mapping fails, the original code only recorded the error and fell through: it left the already-mapped cmd_iu unmapped and still marked the op as FCPOP_STATE_IDLE before returning. Since blk-mq does not call .exit_request() when .init_request() fails, the cmd_iu mapping is leaked for every op whose rsp_iu mapping fails.
Jump to an error path on rsp_iu mapping failure that unmaps cmd_iu and returns the error without marking the op idle, so it stays in the FCPOP_STATE_UNINIT state set by the initial memset().
{
"affected": [],
"aliases": [
"CVE-2026-90411"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-17T17:17:41Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-fc: unmap cmd_iu DMA on rsp_iu mapping failure in init_request\n\n__nvme_fc_init_request() maps cmd_iu and then rsp_iu for DMA. If the\nrsp_iu mapping fails, the original code only recorded the error and fell\nthrough: it left the already-mapped cmd_iu unmapped and still marked the\nop as FCPOP_STATE_IDLE before returning. Since blk-mq does not call\n.exit_request() when .init_request() fails, the cmd_iu mapping is leaked\nfor every op whose rsp_iu mapping fails.\n\nJump to an error path on rsp_iu mapping failure that unmaps cmd_iu and\nreturns the error without marking the op idle, so it stays in the\nFCPOP_STATE_UNINIT state set by the initial memset().",
"id": "GHSA-cp4g-4cx8-r2fq",
"modified": "2026-09-17T18:32:04Z",
"published": "2026-09-17T18:32:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90411"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/18c5781ed8bc2f423c26ec93e47e2057cd76a783"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5e820d04c241c81a47e1940349018690e93d8167"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/acc173608ca7abe5dee8983086b44efd8b0dbc84"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bb0251991420c25e3ceeac40ea09250d79ed7ef0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bd764baf82bb46e958a0bd0b481630dd71313055"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/be5eb47ee3fea338efae1a5b678d6bb5f0fcc931"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c0892cfb60a75e2c86ba8e2127b133f6549c12b3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f49d0c3a8d56a7cda1628ae17341a4a42063563c"
}
],
"schema_version": "1.4.0",
"severity": []
}
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