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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-31414 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_expect: use expect->helper Use expect->helper in ctnetlink and /proc to dump the helper name. Using nfct_help() without holding a reference to the master conntrack is unsafe. Use exp->master->helper in ctnetlink path if userspace does not provide an explicit helper when creating an expectation to retain the existing behaviour. The ctnetlink expectation path holds the reference on the master conntrack and nf_conntrack_expect lock and the nfnetlink glue path refers to the master ct that is attached to the skb.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/3dfd3f7712b5a800f2ba632179e9b738076a51f0 kernel.org
https://git.kernel.org/stable/c/4bd1b3d839172724b33d8d02c5a4ff6a1c775417 kernel.org
https://git.kernel.org/stable/c/847cb7fe26c5ce5dce0d1a41fac1ea488b7f1781 kernel.org
https://git.kernel.org/stable/c/b53294bff19e56ada2f230ceb8b1ffde61cc3817 kernel.org
https://git.kernel.org/stable/c/e7ccaa0a62a8ff2be5d521299ce79390c318d306 kernel.org
https://git.kernel.org/stable/c/f01794106042ee27e54af6fdf5b319a2fe3df94d kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-31414
NVD Published Date:
04/13/2026
NVD Last Modified:
04/27/2026
Source:
kernel.org