CVE-2026-23112
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-23112
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-23112.html
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/dca1a6ba0da9f472ef040525fab10fd9956db59f
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/ab200d71553bdcf4de554a5985b05b2dd606bc57
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/52a0a98549344ca20ad81a4176d68d28e3c05a5c
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/42afe8ed8ad2de9c19457156244ef3e1eca94b5d
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/19672ae68d52ff75347ebe2420dde1b07adca09f
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/1385be357e8acd09b36e026567f3a9d5c61139de
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 6.1.164-1 |
| debian | bullseye | fixed | 6.1.164-1~deb11u1 |
| debian | forky | fixed | 6.18.10-1 |
| debian | sid | fixed | 6.18.10-1 |
| debian | trixie | fixed | 6.12.73-1 |
| linux-kernel | affected | 5.10.250 | |
| linux-kernel | 6.19 | affected | |
References
- 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
- https://www.suse.com/security/cve/CVE-2026-23112.html
- https://security-tracker.debian.org/tracker/CVE-2026-23112
CWEs
CWE-787
Verify integrity in audit chain (admin only). AS-IS.