CVE-2022-48882 net/mlx5e: Fix macsec possible null dereference when updating MAC security entity (SecY)
A null pointer dereference in the Linux kernel's mlx5e MACsec driver can cause a denial of service when updating security entities with extended packet numbers enabled.
- 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-2022-48882?
CVE-2022-48882 is a medium-severity vulnerability in Linux kernel, published on 21 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/mlx5e: Fix macsec possible null dereference when updating MAC security entity (SecY)
Upon updating MAC security entity (SecY) in hw offload path, the macsec security association (SA) initialization routine is called. In case of extended packet number (epn) is enabled the salt and ssci attributes are retrieved using the MACsec driver rx_sa context which is unavailable when updating a SecY property such as encoding-sa hence the null dereference. Fix by using the provided SA to set those attributes.
Weakness: CWE-476
Which versions are affected by CVE-2022-48882?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-48882?
Apply the vendor's patch.
Is CVE-2022-48882 being exploited?
There is no known exploitation of CVE-2022-48882 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-48882, GHSA-pxx8-p2cf-4q57, UBUNTU-CVE-2022-48882.