GSD-2021-1002749 mptcp: fix deadlock in __mptcp_push_pending()
A deadlock in the Linux Kernel MPTCP implementation can cause a denial of service, requiring a kernel patch to resolve.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1002749?
GSD-2021-1002749 is a denial of service vulnerability in Kernel, published on 27 Dec 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
mptcp: fix deadlock in __mptcp_push_pending()
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 v5.15.11 by commit 23311b92755ffa9087332d1bb8c71c0f6a10cc08, it was introduced in version v5.13 by commit 1b3e7ede1365a24db1b4fd837e58a595f52fa4ad. For more details please see the references link.
Which versions are affected by GSD-2021-1002749?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002749?
No fix has been published for GSD-2021-1002749 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-2021-1002749 being exploited?
There is no known exploitation of GSD-2021-1002749 in the wild and no public exploit code.