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CVE-2026-31418Patch(linux / linux_kernel)

LOWCVSS 5.5 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch linux linux_kernel systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD 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.

linux CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Patch / fix
Other references

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • linux_kernel

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 2 signals
  • Technical details provided in 1 signal
  • Peaked 1d ago at 1 mentions (2026-04-13); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
linux
Products
linux_kernel

2 versions affected across 1 product

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-04-13: 1Mentions · 2026-04-14: 1Patch / Workaround · 2026-04-13: 1Patch / Workaround · 2026-04-14: 1Technical Details · 2026-04-13: 104-1304-14
Signal classification1 categories
Patch
2100.0%
Referenced assets2 URLs
Full discourse2 posts
  • WindowsForum@windowsforum
    Patch

    🪟 CVE fix in ipset: “bucket cleanup bug” is Linux for accounting errors. A tiny position pointer gets you networking weirdness. Meanwhile Windows users just get the same pain as “mystery reboot.” https://windowsforum.com/threads/cve-2026-31418-ipset-fix-netfilter-bucket-cleanup-bug-explained.412486/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #PatchManagement #LinuxKernelSecurity #Cve202631418

    Post summary

    The post announces the availability of a fix for CVE-2026-31418 related to ipset's bucket cleanup bug and directs readers to a discussion thread about the patch

    0000013
    1.1K followersView on X
  • CVE@CVEnew
    Patch

    CVE-2026-31418 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… https://www.cve.org/CVERecord?id=CVE-2026-31418

    Post summary

    CVE-2026-31418 has been fixed in the Linux kernel; the post details the technical fix but offers no PoC or exploit information.

    00000100
    57.1K followersView on X
CPE platform detail12 entries

12 of 12 entries

PartVendorProductVersionTarget SWTarget HW
OSlinuxlinux_kernel---
OSlinuxlinux_kernel5.6--
OSlinuxlinux_kernel5.6--
OSlinuxlinux_kernel5.6--
OSlinuxlinux_kernel5.6--
OSlinuxlinux_kernel5.6--
OSlinuxlinux_kernel7.0--
OSlinuxlinux_kernel7.0--
OSlinuxlinux_kernel7.0--
OSlinuxlinux_kernel7.0--
OSlinuxlinux_kernel7.0--
OSlinuxlinux_kernel7.0--

Explore more

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