CVE-2026-64406

Katalog CVE

CVSS 8.0 · High EPSS 0,43%

Kerentanan Use After Free pada linux kernel. Skor CVSS 3.1 8.0 (High) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix UAF in bt_accept_dequeue() bt_accept_get() takes a temporary reference before dropping the accept queue lock. bt_accept_dequeue() currently drops that reference before bt_accept_unlink(), leaving only the queue reference. bt_accept_unlink() drops the queue reference. The subsequent sock_hold() therefore accesses freed memory if it was the final reference, as observed by KASAN during listening L2CAP socket cleanup. Retain the temporary queue-walk reference through unlink and hand it to the caller on success. Drop it explicitly on the closed and not-yet-connected paths.

Rincian

Terbit di NVD

25 Juli 2026

Terakhir diubah

4 September 2026

Status NVD

Analyzed

CVSS 3.1

8.0 (High), sumber CNA
CVSS:3.1/AV:A/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)

0,43% peluang dieksploitasi; lebih tinggi dari 34,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/0a98ff4e7b867f72fbb4e1237d81e9fa02ded0a0 patch
• https://git.kernel.org/stable/c/26168db1ce5a9766cde021b18e590a101c056614 patch
• https://git.kernel.org/stable/c/4bd0b274054f2679f28b70222b607bb0afc3ab9a patch
• https://git.kernel.org/stable/c/50c662bdcd51b03033a0abed6716bfd377ba1049 patch
• https://git.kernel.org/stable/c/6303ed4bbe0095f4cc195225479bf506e010d1db patch
• https://git.kernel.org/stable/c/96ad400d5132eb333f28f6f1e2d58f0728ca9547 patch
• https://git.kernel.org/stable/c/c0577c55219be42b6ea2ea8db11e85bfab6f4e8d patch
• https://git.kernel.org/stable/c/c66a95e60b65d876a927123b0ed36bd6177d9ca6 patch