GHSA-RF7W-4FPM-954R
Vulnerability from github – Published: 2026-09-04 18:31 – Updated: 2026-09-04 18:31In the Linux kernel, the following vulnerability has been resolved:
nvmet: fix NULL pointer dereference in nvmet_execute_identify_nslist()
When a host issues an Identify command with CNS 07h (Active Namespace ID List for a specific I/O Command Set), nvmet_execute_identify_nslist() is called with match_css set. The command-set filter dereferences req->ns, but this handler never calls nvmet_req_find_ns(), so req->ns is always NULL (nvmet_req_init() resets it to NULL). As soon as an enabled namespace with an NSID greater than the requested value exists, req->ns->csi dereferences a NULL pointer and oopses.
Besides the crash, the comparison is logically wrong: to filter the list by command set it must test the command set of the namespace being iterated, not a single fixed value. Use the loop variable ns->csi.
{
"affected": [],
"aliases": [
"CVE-2026-80813"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-04T16:18:08Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet: fix NULL pointer dereference in nvmet_execute_identify_nslist()\n\nWhen a host issues an Identify command with CNS 07h (Active Namespace ID\nList for a specific I/O Command Set), nvmet_execute_identify_nslist() is\ncalled with match_css set. The command-set filter dereferences req-\u003ens,\nbut this handler never calls nvmet_req_find_ns(), so req-\u003ens is always\nNULL (nvmet_req_init() resets it to NULL). As soon as an enabled\nnamespace with an NSID greater than the requested value exists,\nreq-\u003ens-\u003ecsi dereferences a NULL pointer and oopses.\n\nBesides the crash, the comparison is logically wrong: to filter the list\nby command set it must test the command set of the namespace being\niterated, not a single fixed value. Use the loop variable ns-\u003ecsi.",
"id": "GHSA-rf7w-4fpm-954r",
"modified": "2026-09-04T18:31:27Z",
"published": "2026-09-04T18:31:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80813"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/123d664ac98d6f3464462ad4a530474b91ba9890"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2bc1e33ff6a558c8ceef7c0077f3ef70a15fcba2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/61dc1a37e04d4003a19095f54883358330034a39"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/79aba4c9403419d822972d2851f2a96a2c0531cf"
}
],
"schema_version": "1.4.0",
"severity": []
}
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