CVE-2022-49339

Katalog CVE

CVSS 5.5 · Medium EPSS 0,28%

Kerentanan pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: unexport __init-annotated seg6_hmac_init() EXPORT_SYMBOL and __init is a bad combination because the .init.text section is freed up after the initialization. Hence, modules cannot use symbols annotated __init. The access to a freed symbol may end up with kernel panic. modpost used to detect it, but it has been broken for a decade. Recently, I fixed modpost so it started to warn it again, then this showed up in linux-next builds. There are two ways to fix it: - Remove __init - Remove EXPORT_SYMBOL I chose the latter for this case because the caller (net/ipv6/seg6.c) and the callee (net/ipv6/seg6_hmac.c) belong to the same module. It seems an internal function call in ipv6.ko.

Rincian

Terbit di NVD

26 Februari 2025

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

EPSS (30 hari)

0,28% peluang dieksploitasi; lebih tinggi dari 18,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/1084716f76c8045eadf92a9d9a62641f3c8d8c90 patch
• https://git.kernel.org/stable/c/317260b3eb6384a05a8af212308fa50f3b2e8290 patch
• https://git.kernel.org/stable/c/3e6de5037148c5a93a436b1e8d2edad3dac11755 patch
• https://git.kernel.org/stable/c/5801f064e35181c71857a80ff18af4dbec3c5f5c patch
• https://git.kernel.org/stable/c/5d9c1b081ad28c852a97e10dd75412546497694a patch
• https://git.kernel.org/stable/c/64aef8efe96c1616142c4476a05731306fc4494e patch
• https://git.kernel.org/stable/c/9ba4416b831eeb4d185e88e73488d1d21288e63a patch
• https://git.kernel.org/stable/c/ab8b2c2de273ec1d698a18e399896a6febb5cda0 patch