CVE-2024-35823 vt: fix unicode buffer corruption when deleting characters
A memory corruption vulnerability in the Linux kernel VT subsystem allows attackers to cause buffer corruption, potentially leading to system crashes or code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-35823?
CVE-2024-35823 is a medium-severity memory corruption vulnerability in Debian Debian Linux, published on 17 May 2024. 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:
vt: fix unicode buffer corruption when deleting characters
This is the same issue that was fixed for the VGA text buffer in commit 39cdb68c64d8 ("vt: fix memory overlapping when deleting chars in the buffer"). The cure is also the same i.e. replace memcpy() with memmove() due to the overlaping buffers.
Weakness: CWE-120
Which versions are affected by CVE-2024-35823?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2024-35823?
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-2024-35823 being exploited?
There is no known exploitation of CVE-2024-35823 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as BELL-CVE-2024-35823, DEBIAN-CVE-2024-35823, GHSA-7jj8-vg94-4wqj, UBUNTU-CVE-2024-35823.