{"id":"CVE-2026-23112","title":"nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec","summary":"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 u…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 872d26a391da92ed8f0c0f5cb5fef428067b7f30 < 0b9981751be14b59b4473383c731c833738aebdb","Linux >= 872d26a391da92ed8f0c0f5cb5fef428067b7f30 < 42afe8ed8ad2de9c19457156244ef3e1eca94b5d","Linux >= 872d26a391da92ed8f0c0f5cb5fef428067b7f30 < 1385be357e8acd09b36e026567f3a9d5c61139de","Linux >= 872d26a391da92ed8f0c0f5cb5fef428067b7f30 < dca1a6ba0da9f472ef040525fab10fd9956db59f","Linux >= 872d26a391da92ed8f0c0f5cb5fef428067b7f30 < 19672ae68d52ff75347ebe2420dde1b07adca09f","Linux >= 872d26a391da92ed8f0c0f5cb5fef428067b7f30 < ab200d71553bdcf4de554a5985b05b2dd606bc57","Linux >= 872d26a391da92ed8f0c0f5cb5fef428067b7f30 < 52a0a98549344ca20ad81a4176d68d28e3c05a5c","Linux 5.0"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-10-16T15:06:29.646849Z"},"published":"2026-02-13","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:09:49.412Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-23112","references":[{"url":"https://git.kernel.org/stable/c/0b9981751be14b59b4473383c731c833738aebdb"},{"url":"https://git.kernel.org/stable/c/42afe8ed8ad2de9c19457156244ef3e1eca94b5d"},{"url":"https://git.kernel.org/stable/c/1385be357e8acd09b36e026567f3a9d5c61139de"},{"url":"https://git.kernel.org/stable/c/dca1a6ba0da9f472ef040525fab10fd9956db59f"},{"url":"https://git.kernel.org/stable/c/19672ae68d52ff75347ebe2420dde1b07adca09f"},{"url":"https://git.kernel.org/stable/c/ab200d71553bdcf4de554a5985b05b2dd606bc57"},{"url":"https://git.kernel.org/stable/c/52a0a98549344ca20ad81a4176d68d28e3c05a5c"}],"tags":["cve.org"],"epss":0.00467,"epssPercentile":0.39015,"ingestedAt":"2026-10-16T17:24:46.639Z","slug":"CVE-2026-23112","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= 872d26a391da92ed8f0c0f5cb5fef428067b7f30 < 0b9981751be14b59b4473383c731c833738aebdb`\n- `Linux >= 872d26a391da92ed8f0c0f5cb5fef428067b7f30 < 42afe8ed8ad2de9c19457156244ef3e1eca94b5d`\n- `Linux >= 872d26a391da92ed8f0c0f5cb5fef428067b7f30 < 1385be357e8acd09b36e026567f3a9d5c61139de`\n- `Linux >= 872d26a391da92ed8f0c0f5cb5fef428067b7f30 < dca1a6ba0da9f472ef040525fab10fd9956db59f`\n- `Linux >= 872d26a391da92ed8f0c0f5cb5fef428067b7f30 < 19672ae68d52ff75347ebe2420dde1b07adca09f`\n- `Linux >= 872d26a391da92ed8f0c0f5cb5fef428067b7f30 < ab200d71553bdcf4de554a5985b05b2dd606bc57`\n- `Linux >= 872d26a391da92ed8f0c0f5cb5fef428067b7f30 < 52a0a98549344ca20ad81a4176d68d28e3c05a5c`\n- `Linux 5.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}