CVE-2026-23112
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.5% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.5% in the next 30 days (EPSS).
- Severity: 9.8 CRITICAL (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.5% · EPSS, next 30 days
- Weakness
- CWE-787 · Out-of-bounds write
- Record status
- Modified
Affected
- Linux Kernel < 5.10.250
- Linux Kernel < 5.15.200
- Linux Kernel < 6.1.163
- Linux Kernel < 6.6.124
- Linux Kernel < 6.12.70
- Linux Kernel < 6.18.10
- Linux Kernel 6.19
Attack profile CVSS 3.1 · 9.8
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-23112.md and follow it. Check whether this project is affected by CVE-2026-23112. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- 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
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://cert-portal.siemens.com/productcert/html/ssa-253495.html