CVE - CVE-2021-47035

CVE-ID
CVE-2021-47035	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/25faff78138933244c678c7fc78f7c0340fa04a0 URL:https://git.kernel.org/stable/c/25faff78138933244c678c7fc78f7c0340fa04a0 MISC:https://git.kernel.org/stable/c/66c24699f266ff310381a9552d3576eea8ad6e20 URL:https://git.kernel.org/stable/c/66c24699f266ff310381a9552d3576eea8ad6e20 MISC:https://git.kernel.org/stable/c/89bd620798704a8805fc9db0d71d7f812cf5b3d2 URL:https://git.kernel.org/stable/c/89bd620798704a8805fc9db0d71d7f812cf5b3d2 MISC:https://git.kernel.org/stable/c/c848416cc05afc1589edba04fe00b85c2f797ee3 URL:https://git.kernel.org/stable/c/c848416cc05afc1589edba04fe00b85c2f797ee3 MISC:https://git.kernel.org/stable/c/eea53c5816889ee8b64544fa2e9311a81184ff9c URL:https://git.kernel.org/stable/c/eea53c5816889ee8b64544fa2e9311a81184ff9c
Assigning CNA
kernel.org
Date Record Created
20240227	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240227)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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