GSD-2021-1000363 iommu/vt-d: Remove WO permissions on second-level paging entries
The Linux kernel IOMMU driver incorrectly allowed write-only permissions on second-level paging entries, potentially violating security assumptions.
- Exploited in the wild
- Not known
- Login needed
- Not stated
- Attackable
- Not stated
- Victim action needed
- Not stated
- Fix
- None listed
What is GSD-2021-1000363?
GSD-2021-1000363 is a vulnerability in Kernel, published on 31 May 2021.
Official description
iommu/vt-d: Remove WO permissions on second-level paging entries
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.37 by commit c848416cc05afc1589edba04fe00b85c2f797ee3, it was introduced in version v5.6 by commit b802d070a52a1565b47daaa808872cfbd4a17b01. For more details please see the references link.
Which versions are affected by GSD-2021-1000363?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000363?
No fix has been published for GSD-2021-1000363 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1000363 being exploited?
There is no known exploitation of GSD-2021-1000363 in the wild and no public exploit code.