nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec

MITRE NVD CVE.ORG Print: PDF PDF

Summary

CVECVE-2026-23112
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-02-13 14:16:10 UTC
Updated2026-04-03 14:16:24 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

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

Problem Types: CWE-787

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 043b4307a99f902697349128fde93b2ddde4686c git Not specified
CNA Linux Linux affected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 42afe8ed8ad2de9c19457156244ef3e1eca94b5d git Not specified
CNA Linux Linux affected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 1385be357e8acd09b36e026567f3a9d5c61139de git Not specified
CNA Linux Linux affected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 dca1a6ba0da9f472ef040525fab10fd9956db59f git Not specified
CNA Linux Linux affected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 19672ae68d52ff75347ebe2420dde1b07adca09f git Not specified
CNA Linux Linux affected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 ab200d71553bdcf4de554a5985b05b2dd606bc57 git Not specified
CNA Linux Linux affected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 52a0a98549344ca20ad81a4176d68d28e3c05a5c git Not specified
CNA Linux Linux affected 5.0 Not specified
CNA Linux Linux unaffected 5.0 semver Not specified
CNA Linux Linux unaffected 5.10.250 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.200 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.163 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.124 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.70 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.10 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/42afe8ed8ad2de9c19457156244ef3e1eca94b5d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/1385be357e8acd09b36e026567f3a9d5c61139de 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/19672ae68d52ff75347ebe2420dde1b07adca09f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/ab200d71553bdcf4de554a5985b05b2dd606bc57 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/043b4307a99f902697349128fde93b2ddde4686c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/dca1a6ba0da9f472ef040525fab10fd9956db59f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/52a0a98549344ca20ad81a4176d68d28e3c05a5c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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