CVE-2026-23112
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.41% probability · 35th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0b9981751be14b59b4473383c731c833738aebdb
- https://git.kernel.org/stable/c/1385be357e8acd09b36e026567f3a9d5c61139dePatch
- https://git.kernel.org/stable/c/19672ae68d52ff75347ebe2420dde1b07adca09fPatch
- https://git.kernel.org/stable/c/42afe8ed8ad2de9c19457156244ef3e1eca94b5dPatch
- https://git.kernel.org/stable/c/52a0a98549344ca20ad81a4176d68d28e3c05a5cPatch
- https://git.kernel.org/stable/c/ab200d71553bdcf4de554a5985b05b2dd606bc57Patch
- https://git.kernel.org/stable/c/dca1a6ba0da9f472ef040525fab10fd9956db59fPatch
- https://cert-portal.siemens.com/productcert/html/ssa-253495.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.