GSD-2023-1000851 perf/smmuv3: Fix hotplug callback leak in arm_smmu_pmu_init()
A resource leak in the Linux Kernel SMMUv3 PMU driver can lead to memory exhaustion and denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2023-1000851?
GSD-2023-1000851 is a denial of service vulnerability in Kernel, published on 17 Jan 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
perf/smmuv3: Fix hotplug callback leak in arm_smmu_pmu_init()
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 v6.0.16 by commit f245ca9a0fe7f794a8187ad803d5e2ced5a11cb2, it was introduced in version v5.2 by commit 7d839b4b9e00645e49345d6ce5dfa8edf53c1a21. For more details please see the references link.
Which versions are affected by GSD-2023-1000851?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000851?
No fix has been published for GSD-2023-1000851 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-2023-1000851 being exploited?
There is no known exploitation of GSD-2023-1000851 in the wild and no public exploit code.