CVE-2023-54266 media: dvb-usb: m920x: Fix a potential memory leak in m920x_i2c_xfer()
A memory leak in the m920x USB DVB driver allows local attackers to cause denial of service by triggering read errors.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-54266?
CVE-2023-54266 is a memory corruption vulnerability in Linux, published on 30 Dec 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:
media: dvb-usb: m920x: Fix a potential memory leak in m920x_i2c_xfer()
'read' is freed when it is known to be NULL, but not when a read error occurs.
Revert the logic to avoid a small leak, should a m920x_read() call fail.
Which versions are affected by CVE-2023-54266?
How do I fix CVE-2023-54266?
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-2023-54266 being exploited?
There is no known exploitation of CVE-2023-54266 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2023-54266, DEBIAN-CVE-2023-54266, GHSA-76fv-99ww-8hmg, UBUNTU-CVE-2023-54266.