CVE-2022-49291

Katalog CVE

CVSS 7.8 · High EPSS 0,30%

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

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Fix races among concurrent hw_params and hw_free calls Currently we have neither proper check nor protection against the concurrent calls of PCM hw_params and hw_free ioctls, which may result in a UAF. Since the existing PCM stream lock can't be used for protecting the whole ioctl operations, we need a new mutex to protect those racy calls. This patch introduced a new mutex, runtime->buffer_mutex, and applies it to both hw_params and hw_free ioctl code paths. Along with it, the both functions are slightly modified (the mmap_count check is moved into the state-check block) for code simplicity.

Rincian

Terbit di NVD

26 Februari 2025

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

7.8 (High), sumber CISA ADP
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)

0,30% peluang dieksploitasi; lebih tinggi dari 20,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/0090c13cbbdffd7da079ac56f80373a9a1be0bf8 patch
• https://git.kernel.org/stable/c/0f6947f5f5208f6ebd4d76a82a4757e2839a23f8 patch
• https://git.kernel.org/stable/c/1bbf82d9f961414d6c76a08f7f843ea068e0ab7b patch
• https://git.kernel.org/stable/c/33061d0fba51d2bf70a2ef9645f703c33fe8e438 patch
• https://git.kernel.org/stable/c/92ee3c60ec9fe64404dc035e7c41277d74aa26cb patch
• https://git.kernel.org/stable/c/9cb6c40a6ebe4a0cfc9d6a181958211682cffea9 patch
• https://git.kernel.org/stable/c/a42aa926843acca96c0dfbde2e835b8137f2f092 patch
• https://git.kernel.org/stable/c/fbeb492694ce0441053de57699e1e2b7bc148a69 patch