CVE-2025-21759

Katalog CVE

CVSS 7.8 · High EPSS 7,8%

Kerentanan Use After Free pada linux kernel. Skor CVSS 3.1 7.8 (High) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: extend RCU protection in igmp6_send() igmp6_send() can be called without RTNL or RCU being held. Extend RCU protection so that we can safely fetch the net pointer and avoid a potential UAF. Note that we no longer can use sock_alloc_send_skb() because ipv6.igmp_sk uses GFP_KERNEL allocations which can sleep. Instead use alloc_skb() and charge the net->ipv6.igmp_sk socket under RCU protection.

Rincian

Terbit di NVD

27 Februari 2025

Terakhir diubah

3 Oktober 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-416: Use After Free

EPSS (30 hari)

7,8% peluang dieksploitasi; lebih tinggi dari 94,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/087c1faa594fa07a66933d750c0b2610aa1a2946 patch
• https://git.kernel.org/stable/c/0bf8e2f3768629d437a32cb824149e6e98254381 patch
• https://git.kernel.org/stable/c/81b25a07ebf53f9ef4ca8f3d96a8ddb94561dd5a patch
• https://git.kernel.org/stable/c/8e92d6a413feaf968a33f0b439ecf27404407458 patch
• https://git.kernel.org/stable/c/638e8fe3563a82f298fe537a28d5342a97278cf1
• https://git.kernel.org/stable/c/6901bbb169e3add6c037218d996790cef6b3d650
• https://git.kernel.org/stable/c/7e0a818ecc4d62e7fb668ea02de0bfe8ba0b7dff