CVE-2022-48932 net/mlx5: DR, Fix slab-out-of-bounds in mlx5_cmd_dr_create_fte
A slab-out-of-bounds vulnerability in the Linux kernel's mlx5 driver allows attackers to cause denial of service or potentially execute code via crafted network rules.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-48932?
CVE-2022-48932 is a high-severity memory corruption vulnerability in Linux kernel, published on 22 Aug 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
net/mlx5: DR, Fix slab-out-of-bounds in mlx5_cmd_dr_create_fte
When adding a rule with 32 destinations, we hit the following out-of-band access issue:
BUG: KASAN: slab-out-of-bounds in mlx5_cmd_dr_create_fte+0x18ee/0x1e70
This patch fixes the issue by both increasing the allocated buffers to accommodate for the needed actions and by checking the number of actions to prevent this issue when a rule with too many actions is provided.
Weakness: CWE-125
Which versions are affected by CVE-2022-48932?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-48932?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2022-48932 being exploited?
There is no known exploitation of CVE-2022-48932 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-48932, GHSA-vpr7-cgq2-g5rr, UBUNTU-CVE-2022-48932.