GSD-2021-1001241 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-2021-1001241?
GSD-2021-1001241 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 v5.10.54 by commit 6811744bd0efb9e472cb15d066cdb460beb8cb8a, it was introduced in version v5.0 by commit 63346650c1a94a92be61a57416ac88c0a47c4327. For more details please see the references link.
Which versions are affected by GSD-2021-1001241?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001241?
No fix has been published for GSD-2021-1001241 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-2021-1001241 being exploited?
There is no known exploitation of GSD-2021-1001241 in the wild and no public exploit code.