CVE-2021-47339: linux kernel

csirt@kutim:~/threat-intel/cve/CVE-2021-47339

CVSS 5.5 · Medium EPSS 0,24%

Kerentanan Use of Uninitialized Resource pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: media: v4l2-core: explicitly clear ioctl input data As seen from a recent syzbot bug report, mistakes in the compat ioctl implementation can lead to uninitialized kernel stack data getting used as input for driver ioctl handlers. The reported bug is now fixed, but it's possible that other related bugs are still present or get added in the future. As the drivers need to check user input already, the possible impact is fairly low, but it might still cause an information leak. To be on the safe side, always clear the entire ioctl buffer before calling the conversion handler functions that are meant to initialize them.

Rincian

Terbit di NVD: 21 Mei 2024
Terakhir diubah: 17 Juni 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-908: Use of Uninitialized Resource
EPSS (30 hari): 0,24% peluang dieksploitasi; lebih tinggi dari 13,4% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
linux	linux kernel	Semua versi sebelum 5.12.18
linux	linux kernel	Versi 5.13 hingga sebelum 5.13.3

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.