CVE-2023-52606 powerpc/lib: Validate size for vector operations
A missing size validation in PowerPC vector operations allows kernel stack corruption, potentially leading to privilege escalation or denial of service.
- 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-2023-52606?
CVE-2023-52606 is a high-severity memory corruption vulnerability in Linux kernel, published on 6 Mar 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:
powerpc/lib: Validate size for vector operations
Some of the fp/vmx code in sstep.c assume a certain maximum size for the instructions being emulated. The size of those operations however is determined separately in analyse_instr().
Add a check to validate the assumption on the maximum size of the operations, so as to prevent any unintended kernel stack corruption.
Weakness: CWE-770
Which versions are affected by CVE-2023-52606?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-52606?
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-2023-52606 being exploited?
There is no known exploitation of CVE-2023-52606 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2023-52606, DEBIAN-CVE-2023-52606, GHSA-vcwv-jw38-8hqp, UBUNTU-CVE-2023-52606.