CVE-2021-47035: linux kernel

csirt@kutim:~/threat-intel/cve/CVE-2021-47035

CVSS 5.5 · Medium EPSS 0,26%

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

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Remove WO permissions on second-level paging entries When the first level page table is used for IOVA translation, it only supports Read-Only and Read-Write permissions. The Write-Only permission is not supported as the PRESENT bit (implying Read permission) should always set. When using second level, we still give separate permissions that allows WriteOnly which seems inconsistent and awkward. We want to have consistent behavior. After moving to 1st level, we don't want things to work sometimes, and break if we use 2nd level for the same mappings. Hence remove this configuration.

Rincian

Terbit di NVD: 28 Februari 2024
Terakhir diubah: 4 Agustus 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
EPSS (30 hari): 0,26% peluang dieksploitasi; lebih tinggi dari 16,2% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
linux	linux kernel	Versi 5.6 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.