CVE-2021-47046: linux kernel

csirt@kutim:~/threat-intel/cve/CVE-2021-47046

CVSS 7.8 · High EPSS 0,25%

Kerentanan Off-by-one Error pada linux kernel. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix off by one in hdmi_14_process_transaction() The hdcp_i2c_offsets[] array did not have an entry for HDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE so it led to an off by one read overflow. I added an entry and copied the 0x0 value for the offset from similar code in drivers/gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c. I also declared several of these arrays as having HDCP_MESSAGE_ID_MAX entries. This doesn't change the code, but it's just a belt and suspenders approach to try future proof the code.

Rincian

Terbit di NVD: 28 Februari 2024
Terakhir diubah: 17 Juni 2026
Status NVD: Analyzed
CVSS 3.1: 7.8 (High), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-193: Off-by-one Error
EPSS (30 hari): 0,25% peluang dieksploitasi; lebih tinggi dari 14,5% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
linux	linux kernel	Versi 5.5 hingga sebelum 5.10.37
linux	linux kernel	Versi 5.11 hingga sebelum 5.11.21
linux	linux kernel	Versi 5.12 hingga sebelum 5.12.4

> 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.