GSD-2021-1001367 netrom: Decrease sock refcount when sock timers expire
A use-after-free vulnerability in the Linux kernel netrom module allows 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-2021-1001367?
GSD-2021-1001367 is an use after free vulnerability in Kernel, published on 3 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
netrom: Decrease sock refcount when sock timers expire
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 v4.19.199 by commit 9619cc7d97c3aa8ed3cfd2b8678b74fb6d6c7950, it was introduced in version v4.19.20 by commit 2c6b572458a9127e8070df13fa7f115c29ab1d92. For more details please see the references link.
Which versions are affected by GSD-2021-1001367?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001367?
No fix has been published for GSD-2021-1001367 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-2021-1001367 being exploited?
There is no known exploitation of GSD-2021-1001367 in the wild and no public exploit code.