CVE WatchOct 19, 2026

CVE-2026-23412

In the Linux kernel, the following vulnerability has been resolved: netfilter: bpf: defer hook memory release until rcu readers are done Y

CVSS

7.8

High

EPSS

0.2%

KEV

—

Exploit Today

0-100

Published: Apr 2, 2026 · Last modified: Oct 19, 2026 · CWE-416

EPSS · 30d

0.1%EPSS · 30 days0.2%

2026-10-022026-10-29

Technical description

In the Linux kernel, the following vulnerability has been resolved: netfilter: bpf: defer hook memory release until rcu readers are done Yiming Qian reports UaF when concurrent process is dumping hooks via nfnetlink_hooks: BUG: KASAN: slab-use-after-free in nfnl_hook_dump_one.isra.0+0xe71/0x10f0 Read of size 8 at addr ffff888003edbf88 by task poc/79 Call Trace: <TASK> nfnl_hook_dump_one.isra.0+0xe71/0x10f0 netlink_dump+0x554/0x12b0 nfnl_hook_get+0x176/0x230 [..] Defer release until after concurrent readers have completed.

Official references

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