CVE-2026-23112
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec nvmet_tcp_build_pdu_iovec() could walk past cmd->req.sg when a PDU length or offset exceeds sg_cnt and then use bogus sg->length/offset values, leading to _copy_to_iter() GPF/KASAN. Guard sg_idx, remaining entries, and sg->length/offset before building the bvec.
Severity
CRITICAL
CVSS score
9.8
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-02-13 14:16:10.403000
Last modified
2026-10-19 19:17:37.330000
View original CVE JSON
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-02-13T14:16:10.403",
"lastModified": "2026-10-19T19:17:37.330",
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec\n\nnvmet_tcp_build_pdu_iovec() could walk past cmd->req.sg when a PDU\nlength or offset exceeds sg_cnt and then use bogus sg->length/offset\nvalues, leading to _copy_to_iter() GPF/KASAN. Guard sg_idx, remaining\nentries, and sg->length/offset before building the bvec."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnvmet-tcp: añadir comprobaciones de límites en nvmet_tcp_build_pdu_iovec\n\nnvmet_tcp_build_pdu_iovec() podría exceder cmd->req.sg cuando una longitud o desplazamiento de PDU excede sg_cnt y luego usar valores sg->length/offset erróneos, lo que lleva a _copy_to_iter() GPF/KASAN. Proteger sg_idx, las entradas restantes y sg->length/offset antes de construir el bvec."
}
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