GSD-2022-1003248 tcp: fix tcp_mtup_probe_success vs wrong snd_cwnd
A flaw in the Linux kernel TCP implementation allows remote attackers to cause a denial of service via incorrect congestion window handling during MTU probes.
- 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-2022-1003248?
GSD-2022-1003248 is a denial of service vulnerability in Kernel, published on 28 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
tcp: fix tcp_mtup_probe_success vs wrong snd_cwnd
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 v5.15.47 by commit 90385f2b65d0cd2b3b1ac8909f0cc6dd31062cfc, it was introduced in version v2.6.17 by commit 5d424d5a674f782d0659a3b66d951f412901faee. For more details please see the references link.
Which versions are affected by GSD-2022-1003248?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1003248?
No fix has been published for GSD-2022-1003248 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-2022-1003248 being exploited?
There is no known exploitation of GSD-2022-1003248 in the wild and no public exploit code.