GSD-2021-1001437 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-2021-1001437?
GSD-2021-1001437 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 v4.9.277 by commit a01634bf91f2b6c42583770eb6815fb6d1e251cf, it was introduced in version v4.9.155 by commit baa9e32336bf6d0d74a7c3486d2a27feaf57cd5f. For more details please see the references link.
Which versions are affected by GSD-2021-1001437?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001437?
No fix has been published for GSD-2021-1001437 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-2021-1001437 being exploited?
There is no known exploitation of GSD-2021-1001437 in the wild and no public exploit code.