CVE-2026-23112

nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec

CVSS 9.8 CRITICALEPSS 0.4%

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 9.8EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

13 Feb 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Linux · Linux

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References

https://cert-portal.siemens.com/productcert/html/ssa-253495.html https://git.kernel.org/stable/c/0b9981751be14b59b4473383c731c833738aebdb https://git.kernel.org/stable/c/1385be357e8acd09b36e026567f3a9d5c61139de https://git.kernel.org/stable/c/19672ae68d52ff75347ebe2420dde1b07adca09f https://git.kernel.org/stable/c/42afe8ed8ad2de9c19457156244ef3e1eca94b5d https://git.kernel.org/stable/c/52a0a98549344ca20ad81a4176d68d28e3c05a5c https://git.kernel.org/stable/c/ab200d71553bdcf4de554a5985b05b2dd606bc57 https://git.kernel.org/stable/c/dca1a6ba0da9f472ef040525fab10fd9956db59f