CVE-2026-64078Patch(linux / linux_kernel)

LOWCVSS 7.8 · HIGH

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: x_tables: add and use xtables_unregister_table_exit Previous change added xtables_unregister_table_pre_exit to detach the table from the packetpath and to unlink it from the active table list. In case of rmmod, userspace that is doing set/getsockopt for this table will not be able to re-instantiate the table: 1. The larval table has been removed already 2. existing instantiated table is no longer on the xt pernet table list. This adds the second stage helper: unlink the table from the dying list, free the hook ops (if any) and do the audit notification. It replaces xt_unregister_table().

0.5/ 10 priority

Sources & remediation

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

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
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Affected systems

Vendors
Products
linux_kernel

1 version affected across 1 product

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-07-21: 1Patch / Workaround · 2026-07-21: 1Technical Details · 2026-07-21: 107-21
Signal classification1 categories
Patch
1100.0%
Referenced assets1 URL
Full discourse1 post
  • Windows Forum@windowsforum
    Patch

    ⚠️ WSL 2 isn’t “just Linux on Windows” when a high-severity Netfilter flaw can cross the boundary. If your kernel is 5.15+, patch it before attackers do the homework. https://windowsforum.com/threads/cve-2026-64078-patch-linux-5-15-netfilter-flaw-in-wsl-2.439796/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #LinuxKernel #ContainerSecurity #Netfilter #Wsl2 https://t.co/xgMGc5XcOA

    Post summary

    The post warns users of a high‑severity Netfilter vulnerability in Linux kernel 5.15+ that can impact WSL 2, recommending that they apply the patch before exploitation occurs.

    0000018
    1.3K followersView on X
CPE platform detail4 entries

4 of 4 entries

PartVendorProductVersionTarget SWTarget HW
OSlinuxlinux_kernel---
OSlinuxlinux_kernel7.1--
OSlinuxlinux_kernel7.1--
OSlinuxlinux_kernel7.1--

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