CVE-2024-57801 net/mlx5e: Skip restore TC rules for vport rep without loaded flag
A use-after-free vulnerability in the Linux kernel's mlx5e driver allows attackers to cause denial of service or potentially execute code during driver unload.
- 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-2024-57801?
CVE-2024-57801 is a high-severity use after free vulnerability in Linux kernel, published on 15 Jan 2025. 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/mlx5e: Skip restore TC rules for vport rep without loaded flag
During driver unload, unregister_netdev is called after unloading vport rep. So, the mlx5e_rep_priv is already freed while trying to get rpriv->netdev, or walk rpriv->tc_ht, which results in use-after-free. So add the checking to make sure access the data of vport rep which is still loaded.
Weakness: CWE-416
Which versions are affected by CVE-2024-57801?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-57801?
Apply the vendor's patch.
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 CVE-2024-57801 being exploited?
There is no known exploitation of CVE-2024-57801 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-55832, BELL-CVE-2024-57801, DEBIAN-CVE-2024-57801, GHSA-7q6q-ppp8-9gr5, UBUNTU-CVE-2024-57801.