CVE-2026-89733

Katalog CVE

CVSS 7.8 · High EPSS 0,17%

Skor CVSS 3.1 7.8 (High) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: uvc: fix dangling pointers in uvc_function_bind() and uvc_function_unbind() In uvc_function_bind() error path, we use usb_ep_free_request which uses uvc->control_req but does not set it to NULL afterwards. Thus, uvc->control_req is a dangling pointer causing a UAF. Also we do not set the uvc->control_buf pointer to NULL after freeing it, which is another dangling pointer. Fix it by setting uvc->control_req to NULL after we run usb_ep_free_request() and uvc->control_buf to NULL after kfree. Do the same for uvc_function_unbind().

Rincian

Terbit di NVD

11 September 2026

Terakhir diubah

14 September 2026

Status NVD

Received

CVSS 3.1

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

EPSS (30 hari)

0,17% peluang dieksploitasi; lebih tinggi dari 5,8% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/38f822ddce9355893d734279a26ddec45182197e
• https://git.kernel.org/stable/c/502a7f5b79b7ba751988789e982924f8f496129f
• https://git.kernel.org/stable/c/85dd5e8bd6776d02854f2847d83429f1f712e99c
• https://git.kernel.org/stable/c/8e88ed8a374de67270d38689f2a81018909cafbb
• https://git.kernel.org/stable/c/9897b7da8c0ad8356c1b8649379fcb5a689462cb
• https://git.kernel.org/stable/c/bdab5605259ba5d6ff927c1a85cc83eb3ecfdacc
• https://git.kernel.org/stable/c/bec7708eb3b5295d12e931db24381b7c94c72953
• https://git.kernel.org/stable/c/ddb1b0d5d858584ed0d3a5aaa042ee693998c7e2