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VULNERABILITIES

CVE-2026-31418 Details

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: drop logically empty buckets in mtype_del mtype_del() counts empty slots below n->pos in k, but it only drops the bucket when both n->pos and k are zero. This misses buckets whose live entries have all been removed while n->pos still points past deleted slots. Treat a bucket as empty when all positions below n->pos are unused and release it directly instead of shrinking it further.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://cert-portal.siemens.com/productcert/html/ssa-019113.html siemens-SADP
https://cert-portal.siemens.com/productcert/html/ssa-082556.html siemens-SADP
https://git.kernel.org/stable/c/58f3a14826d4e6b0d5421f1a64be280b48601ea2 kernel.orgPatch
https://git.kernel.org/stable/c/68ca0eea0af02bed36c5e2c13e9fa1647c31a7d4 kernel.orgPatch
https://git.kernel.org/stable/c/6cea34d7ec6829b62f521a37a287f670144a2233 kernel.orgPatch

see all 10 references

Weakness Enumeration

CWE-IDCWE NameSource
NVD-CWE-noinfoInsufficient Information to Classify Weakness[email protected]

Affected Products

ProductVersions
linux linux kernel
>= 5.4.24, < 5.5
>= 5.5.8, < 5.6
>= 5.6.1, < 5.10.253
>= 5.11, < 5.15.203
>= 5.16, < 6.1.168

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.6:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.6:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.6:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.6:rc6:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.6:rc7:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-31418
NVD Published Date:
Apr 13, 2026
NVD Last Modified:
Jul 14, 2026
Source:
kernel.org
CVE-2026-31418 Details - Not Deferred