CVE-2026-53252

Katalog CVE

CVSS 5.5 · Medium EPSS 0,13%

Kerentanan Missing Release of Memory after Effective Lifetime pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix memory leak in error path of hci_alloc_dev() Early failures in Bluetooth HCI UART configuration leak SRCU percpu memory. When device initialization fails before hci_register_dev() completes, the HCI_UNREGISTER flag is never set. As a result, when the device reference count reaches zero, bt_host_release() evaluates this flag as false and falls back to a direct kfree(hdev). Because hci_release_dev() is bypassed, the SRCU struct initialized early in hci_alloc_dev() is never cleaned up, resulting in a leak of percpu memory. Fix the leak by explicitly calling cleanup_srcu_struct() in the fallback (unregistered) branch of bt_host_release() before freeing the device.

Rincian

Terbit di NVD

25 Juni 2026

Terakhir diubah

8 Juli 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

Jenis kelemahan (CWE)

CWE-401: Missing Release of Memory after Effective Lifetime

EPSS (30 hari)

0,13% peluang dieksploitasi; lebih tinggi dari 2,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/0622e527a31d4b44737fed5c1a2ac1fc2cfb5184 patch
• https://git.kernel.org/stable/c/37b3009bf5976e8ab77c8b9a9bc3bbd7ff49e37f patch
• https://git.kernel.org/stable/c/5b7dfca6f852e6b9d809fd0263b5427cc9fb33fd patch
• https://git.kernel.org/stable/c/bc2efe73c194a74839d7cf57b63880d97e21d309 patch
• https://git.kernel.org/stable/c/c016118b9e51eeaf5bc93850d4c455a3b583c0aa patch
• https://git.kernel.org/stable/c/ce4b4cac3c5749b6aa75e62e2991ae2263f2f889 patch
• https://git.kernel.org/stable/c/f82799407a50af7bcacacf09cc9b279af8fe9b81 patch