GSD-2021-1000665 iommu/vt-d: Fix sysfs leak in alloc_iommu()
A memory leak in the Linux kernel IOMMU driver can lead to resource exhaustion and denial of service, requiring local privileged access.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1000665?
GSD-2021-1000665 is a memory corruption vulnerability in Kernel, published on 4 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
iommu/vt-d: Fix sysfs leak in alloc_iommu()
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 v4.19.193 by commit 2ec5e9bb6b0560c90d315559c28a99723c80b996, it was introduced in version v4.11 by commit 39ab9555c24110671f8dc671311a26e5c985b592. For more details please see the references link.
Which versions are affected by GSD-2021-1000665?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000665?
No fix has been published for GSD-2021-1000665 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is GSD-2021-1000665 being exploited?
There is no known exploitation of GSD-2021-1000665 in the wild and no public exploit code.