CVE-2024-49973 r8169: add tally counter fields added with RTL8125
A buffer overflow in the r8169 network driver allows DMA writes to unallocated memory, potentially causing crashes or code execution.
- 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-2024-49973?
CVE-2024-49973 is a high-severity memory corruption vulnerability in Linux kernel, published on 21 Oct 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:
r8169: add tally counter fields added with RTL8125
RTL8125 added fields to the tally counter, what may result in the chip dma'ing these new fields to unallocated memory. Therefore make sure that the allocated memory area is big enough to hold all of the tally counter values, even if we use only parts of it.
Which versions are affected by CVE-2024-49973?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-49973?
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-2024-49973 being exploited?
There is no known exploitation of CVE-2024-49973 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-52120, BELL-CVE-2024-49973, DEBIAN-CVE-2024-49973, GHSA-fh83-rw64-jhh7, UBUNTU-CVE-2024-49973.