CVE-2022-49997 net: lantiq_xrx200: restore buffer if memory allocation failed
A memory allocation failure in the Lantiq XRX200 network driver causes a system panic, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-49997?
CVE-2022-49997 is a high-severity vulnerability in Linux kernel, published on 18 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
net: lantiq_xrx200: restore buffer if memory allocation failed
In a situation where memory allocation fails, an invalid buffer address is stored. When this descriptor is used again, the system panics in the build_skb() function when accessing memory.
Weakness: CWE-401
Which versions are affected by CVE-2022-49997?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49997?
Apply the vendor's patch.
Is CVE-2022-49997 being exploited?
There is no known exploitation of CVE-2022-49997 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49997, GHSA-5v59-j8mr-j2wp, ROOT-OS-DEBIAN-11-CVE-2022-49997, ROOT-OS-UBUNTU-2204-CVE-2022-49997, UBUNTU-CVE-2022-49997.