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CVE-2026-23112

nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.253, 5.15.200, 6.1.163, 6.6.124, 6.12.70, and 1 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: total

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: total

  3. Record last updated

Affected versions

  • Linux Linux

    From 872d26a391da92ed8f0c0f5cb5fef428067b7f30 · fixed in 0b9981751be14b59b4473383c731c833738aebdb; From 872d26a391da92ed8f0c0f5cb5fef428067b7f30 · fixed in 42afe8ed8ad2de9c19457156244ef3e1eca94b5d; From 872d26a391da92ed8f0c0f5cb5fef428067b7f30 · fixed in 1385be357e8acd09b36e026567f3a9d5c61139de; From 872d26a391da92ed8f0c0f5cb5fef428067b7f30 · fixed in dca1a6ba0da9f472ef040525fab10fd9956db59f; From 872d26a391da92ed8f0c0f5cb5fef428067b7f30 · fixed in 19672ae68d52ff75347ebe2420dde1b07adca09f; From 872d26a391da92ed8f0c0f5cb5fef428067b7f30 · fixed in ab200d71553bdcf4de554a5985b05b2dd606bc57; From 872d26a391da92ed8f0c0f5cb5fef428067b7f30 · fixed in 52a0a98549344ca20ad81a4176d68d28e3c05a5c

  • Linux Linux

    5.0

  • KernelLinux

    From 5.0.0 · fixed in 5.10.253; From 5.11.0 · fixed in 5.15.200; From 5.16.0 · fixed in 6.1.163; From 6.2.0 · fixed in 6.6.124; From 6.7.0 · fixed in 6.12.70; From 6.13.0 · fixed in 6.18.10

References 7

git.kernel.org