GSD-2021-1000168 tracing: Restructure trace_clock_global() to never block
A blocking issue in the Linux kernel tracing subsystem can cause a denial of service, requiring a kernel patch to resolve.
- 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-2021-1000168?
GSD-2021-1000168 is a denial of service vulnerability in Kernel, published on 31 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
tracing: Restructure trace_clock_global() to never block
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 v5.4.118 by commit c64da3294a7d59a4bf6874c664c13be892f15f44, it was introduced in version v5.4.76 by commit aef59b5e5bdfc800f0e7aec7e74a33e98bf142c0. For more details please see the references link.
Which versions are affected by GSD-2021-1000168?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000168?
No fix has been published for GSD-2021-1000168 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-2021-1000168 being exploited?
There is no known exploitation of GSD-2021-1000168 in the wild and no public exploit code.