CVE-2026-23412 in Kernel

Resumen (Inglés)

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:

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.

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Responsable

Linux

Reservar

2026-01-13

Divulgación

2026-04-02

Estado

Confirmado

Voces

VulDB provides additional information and datapoints for this CVE:

ID	Vulnerabilidad	CWE	Exp	Con	CVE
354858	Linux Kernel netfilter nfnetlink_hooks desbordamiento de búfer	416	No está definido	Arreglo oficial	CVE-2026-23412

Fuentes

• MITRE
• NVD
• CVE Details