GSD-2021-1000794 mptcp: fix sk_forward_memory corruption on retransmission
A memory corruption issue in the Linux Kernel MPTCP subsystem can lead to denial of service during retransmission.
- 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-2021-1000794?
GSD-2021-1000794 is a memory corruption vulnerability in Kernel, published on 25 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
mptcp: fix sk_forward_memory corruption on retransmission
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 v5.12.10 by commit b9c78b1a95966a7bd2ddae05b73eafc0cda4fba3, it was introduced in version v5.12 by commit 64b9cea7a0afe579dd2682f1f1c04f2e4e72fd25. For more details please see the references link.
Which versions are affected by GSD-2021-1000794?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000794?
No fix has been published for GSD-2021-1000794 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is GSD-2021-1000794 being exploited?
There is no known exploitation of GSD-2021-1000794 in the wild and no public exploit code.