PT-2024-11133 · Linux+1 · Linux Kernel+1

Published 2021-04-07 · Updated 2025-01-09 · CVE-2021-47035

Positive Technologies (AI Summary)

CVSS v2.0

7.5

High

Base vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to the iommu/vt-d component in the Linux kernel, where the first level page table used for IOVA translation only supports Read-Only and Read-Write permissions, but not Write-Only permission. However, when using the second level, separate permissions are given that allow WriteOnly, which seems inconsistent. The goal is to have consistent behavior and remove the Write-Only permission configuration for second-level paging entries.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2025-07254

CVE-2021-47035

OPENSUSE-SU-2024_1489-1

SUSE-SU-2024:1465-1

SUSE-SU-2024:1489-1

Affected Products

Linux Kernel

Suse

References · 348

• https://cve.org/CVERecord?id=CVE-2021-47035 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47035 · Vendor Advisory
• https://git.kernel.org/stable/c/66c24699f266ff310381a9552d3576eea8ad6e20 · Patch
• https://osv.dev/vulnerability/CVE-2021-47035 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47035 · Vendor Advisory
• https://git.kernel.org/stable/c/c848416cc05afc1589edba04fe00b85c2f797ee3 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:1489-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-07254 · Security Note
• https://git.kernel.org/stable/c/25faff78138933244c678c7fc78f7c0340fa04a0 · Patch
• https://git.kernel.org/stable/c/eea53c5816889ee8b64544fa2e9311a81184ff9c · Patch
• https://security-tracker.debian.org/tracker/CVE-2021-47035 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-47035 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47035 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:1465-1 · Vendor Advisory
• https://git.kernel.org/stable/c/89bd620798704a8805fc9db0d71d7f812cf5b3d2 · Patch