CVE-2021-47652

Katalog CVE

CVSS 5.5 · Medium EPSS 0,26%

Kerentanan NULL Pointer Dereference pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: video: fbdev: smscufx: Fix null-ptr-deref in ufx_usb_probe() I got a null-ptr-deref report: BUG: kernel NULL pointer dereference, address: 0000000000000000 ... RIP: 0010:fb_destroy_modelist+0x38/0x100 ... Call Trace: ufx_usb_probe.cold+0x2b5/0xac1 [smscufx] usb_probe_interface+0x1aa/0x3c0 [usbcore] really_probe+0x167/0x460 ... ret_from_fork+0x1f/0x30 If fb_alloc_cmap() fails in ufx_usb_probe(), fb_destroy_modelist() will be called to destroy modelist in the error handling path. But modelist has not been initialized yet, so it will result in null-ptr-deref. Initialize modelist before calling fb_alloc_cmap() to fix this bug.

Rincian

Terbit di NVD

26 Februari 2025

Terakhir diubah

17 Juni 2026

Status NVD

Modified

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-476: NULL Pointer Dereference

EPSS (30 hari)

0,26% peluang dieksploitasi; lebih tinggi dari 16,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/0fd28daec73525382e5c992db8743bf76e42cd5c patch
• https://git.kernel.org/stable/c/1791f487f877a9e83d81c8677bd3e7b259e7cb27 patch
• https://git.kernel.org/stable/c/64ec3e678d76419f207b9cdd338dda438ca10b1c patch
• https://git.kernel.org/stable/c/9280ef235b05e8f19f8bc6d547b992f0a0ef398d patch
• https://git.kernel.org/stable/c/c420b540db4b5d69de0a36d8b9d9a6a79a04f05a patch
• https://git.kernel.org/stable/c/d1b6a1f0c23b7164250479bf92e2893291dca539 patch
• https://git.kernel.org/stable/c/d396c651e2b508b6179bb678cc029f3becbf5170 patch
• https://git.kernel.org/stable/c/da8b269cc0a2526ebeaccbe2484c999eb0f822cf patch
• https://git.kernel.org/stable/c/dd3a6cc7385b89ec2303f39dfc3bafa4e24cec4b patch