GSD-2021-1002562 net/mlx4_en: Fix an use-after-free bug in mlx4_en_try_alloc_resources()
A use-after-free bug in the mlx4_en network driver allows local attackers with high privileges to cause denial of service or escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1002562?
GSD-2021-1002562 is an use after free vulnerability in Kernel, published on 19 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
net/mlx4_en: Fix an use-after-free bug in mlx4_en_try_alloc_resources()
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 v5.15.7 by commit 75917372eef0dbfb290ae45474314d35f97aea18, it was introduced in version v4.7 by commit ec25bc04ed8e12947738468cbe2191f1529f9e39. For more details please see the references link.
Which versions are affected by GSD-2021-1002562?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002562?
No fix has been published for GSD-2021-1002562 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-2021-1002562 being exploited?
There is no known exploitation of GSD-2021-1002562 in the wild and no public exploit code.