GSD-2021-1002746 mptcp: clear 'kern' flag from fallback sockets
The Linux kernel failed to clear the kernel flag on fallback sockets, potentially leading to undefined behavior or security issues in MPTCP implementations.
- 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-2021-1002746?
GSD-2021-1002746 is a 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: clear 'kern' flag from fallback sockets
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 c26ac0ea3a91c210cf90452e625dc441adf3e549, it was introduced in version v5.6 by commit cf7da0d66cc1a2a19fc5930bb746ffbb2d4cd1be. For more details please see the references link.
Which versions are affected by GSD-2021-1002746?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002746?
No fix has been published for GSD-2021-1002746 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1002746 being exploited?
There is no known exploitation of GSD-2021-1002746 in the wild and no public exploit code.