CVE-2026-23191

Katalog CVE

CVSS 7.0 · High EPSS 0,14%

Kerentanan Use After Free pada linux kernel. Skor CVSS 3.1 7.0 (High) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: ALSA: aloop: Fix racy access at PCM trigger The PCM trigger callback of aloop driver tries to check the PCM state and stop the stream of the tied substream in the corresponding cable. Since both check and stop operations are performed outside the cable lock, this may result in UAF when a program attempts to trigger frequently while opening/closing the tied stream, as spotted by fuzzers. For addressing the UAF, this patch changes two things: - It covers the most of code in loopback_check_format() with cable->lock spinlock, and add the proper NULL checks. This avoids already some racy accesses. - In addition, now we try to check the state of the capture PCM stream that may be stopped in this function, which was the major pain point leading to UAF.

Rincian

Terbit di NVD

14 Februari 2026

Terakhir diubah

14 September 2026

Status NVD

Modified

CVSS 3.1

7.0 (High), sumber NVD
CVSS:3.1/AV:L/AC:H/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)

0,14% peluang dieksploitasi; lebih tinggi dari 2,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/5727ccf9d19ca414cb76d9b647883822e2789c2e patch
• https://git.kernel.org/stable/c/826af7fa62e347464b1b4e0ba2fe19a92438084f patch
• https://git.kernel.org/stable/c/bad15420050db1803767e58756114800cce91ea4 patch
• https://git.kernel.org/stable/c/0e6245b2424d126ac90018142d09f0707e12998b
• https://git.kernel.org/stable/c/c99be0d5af02adebe9cb6f9869d20397fa9935a3
• https://git.kernel.org/stable/c/f3ce8be893726899e3053cf8059ecc95d8410359
• https://git.kernel.org/stable/c/f57467114f40c5aacebbea96fb4ff9e5cd2b7f18