GSD-2021-1002649 sch_cake: do not call cake_destroy() from cake_init()
A flaw in the Linux kernel's CAKE qdisc initialization could lead to a denial of service, requiring a kernel patch.
- 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-2021-1002649?
GSD-2021-1002649 is a denial of service vulnerability in Kernel, published on 27 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
sch_cake: do not call cake_destroy() from cake_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 v4.19.222 by commit 4e388232e630ebe4f94b4a0715ec98c0e2b314a3, it was introduced in version v4.19 by commit 046f6fd5daefac7f5abdafb436b30f63bc7c602b. For more details please see the references link.
Which versions are affected by GSD-2021-1002649?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002649?
No fix has been published for GSD-2021-1002649 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-2021-1002649 being exploited?
There is no known exploitation of GSD-2021-1002649 in the wild and no public exploit code.