CVE-2026-63968

Katalog CVE

CVSS 7.5 · High EPSS 0,68%

Skor CVSS 3.1 7.5 (High) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible infinite loop in fib6_select_path() Found while auditing the same pattern Sashiko reported in rt6_fill_node() [1]. Apply the same fix as commit f8d8ce1b515a ("ipv6: fix possible infinite loop in fib6_info_uses_dev()"). Writers holding tb6_lock can list_del_rcu(&first->fib6_siblings) without waiting for RCU readers; first->fib6_siblings.next then still points into the old ring and this softirq-side walker never reaches &first->fib6_siblings as its terminator. fib6_purge_rt() always WRITE_ONCE()s first->fib6_nsiblings to 0 before list_del_rcu(), so an inside-loop check is a reliable detach signal. [1] https://sashiko.dev/#/patchset/20260526020227.4857-1-jiayuan.chen%40linux.dev

Rincian

Terbit di NVD

19 Juli 2026

Terakhir diubah

30 Juli 2026

Status NVD

Awaiting Analysis

CVSS 3.1

7.5 (High), sumber CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

EPSS (30 hari)

0,68% peluang dieksploitasi; lebih tinggi dari 51,3% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/0f7b73c3452635de83b8711b31abdda8e49aad7b
• https://git.kernel.org/stable/c/3948a7d92f7678e89e1776bb2d169afcad63b1ae
• https://git.kernel.org/stable/c/9b9d5bd6e3d4c9cecab5407604b690684b2532d2
• https://git.kernel.org/stable/c/9c7da87c2dc860bb17ca1ece942495d28b1ce3b9
• https://git.kernel.org/stable/c/ab9a10969a907b472a0196d999c08ff7144172e3
• https://git.kernel.org/stable/c/c87cd3cb309634bc8f50a54e2079424f219ac21f