GSD-2022-1008022 tcp: cdg: allow tcp_cdg_release() to be called multiple times
A use-after-free vulnerability in the Linux kernel TCP congestion control allows remote attackers to cause denial of service or potentially execute code.
- 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-2022-1008022?
GSD-2022-1008022 is an use after free vulnerability in Kernel, published on 8 Dec 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
tcp: cdg: allow tcp_cdg_release() to be called multiple times
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 v5.10.156 by commit 35309be06b6feded2ab2cafbc2bca8534c2fa41e, it was introduced in version v4.2 by commit 2b0a8c9eee81882fc0001ccf6d9af62cdc682f9e. For more details please see the references link.
Which versions are affected by GSD-2022-1008022?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1008022?
No fix has been published for GSD-2022-1008022 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is GSD-2022-1008022 being exploited?
There is no known exploitation of GSD-2022-1008022 in the wild and no public exploit code.