Bug 2439683 (CVE-2026-23112) - CVE-2026-23112 kernel: nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec
Summary: CVE-2026-23112 kernel: nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec
Keywords:
Status: NEW
Alias: CVE-2026-23112
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-02-13 14:01 UTC by OSIDB Bzimport
Modified: 2026-03-17 05:46 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-02-13 14:01:13 UTC 
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.
Comment 1 TEJ RATHI 2026-02-13 14:33:38 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026021302-CVE-2026-23112-6499@gregkh/T
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