GSD-2021-1001274 iommu/arm-smmu: Fix arm_smmu_device refcount leak when arm_smmu_rpm_get fails
A refcount leak in the ARM SMMU driver can lead to resource exhaustion and denial of service, requiring local access to trigger.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1001274?
GSD-2021-1001274 is a denial of service vulnerability in Kernel, published on 3 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
iommu/arm-smmu: Fix arm_smmu_device refcount leak when arm_smmu_rpm_get fails
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 v5.10.52 by commit c4007596fbdabc29f858dc2e1990858a146b60b2. For more details please see the references link.
Which versions are affected by GSD-2021-1001274?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001274?
No fix has been published for GSD-2021-1001274 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is GSD-2021-1001274 being exploited?
There is no known exploitation of GSD-2021-1001274 in the wild and no public exploit code.