GSD-2022-1000021 net: fix use-after-free in tw_timer_handler
A use-after-free vulnerability in the Linux kernel's network timer handler 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-2022-1000021?
GSD-2022-1000021 is an use after free vulnerability in Kernel, published on 10 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
net: fix use-after-free in tw_timer_handler
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 v4.19.224 by commit a8e1944b44f94f5c5f530e434c5eaee787254566, it was introduced in version v2.6.27 by commit 61a7e26028b94805fd686a6dc9dbd9941f8f19b0. For more details please see the references link.
Which versions are affected by GSD-2022-1000021?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1000021?
No fix has been published for GSD-2022-1000021 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-2022-1000021 being exploited?
There is no known exploitation of GSD-2022-1000021 in the wild and no public exploit code.