CVE-2024-42267 riscv/mm: Add handling for VM_FAULT_SIGSEGV in mm_fault_error()
A missing error handler in the RISC-V memory management code allows a local attacker to crash the kernel by triggering a specific page fault condition.
- 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-2024-42267?
CVE-2024-42267 is a medium-severity denial of service vulnerability in Linux kernel, published on 17 Aug 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:
riscv/mm: Add handling for VM_FAULT_SIGSEGV in mm_fault_error()
Handle VM_FAULT_SIGSEGV in the page fault path so that we correctly kill the process and we don't BUG() the kernel.
Which versions are affected by CVE-2024-42267?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-42267?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-42267 being exploited?
There is no known exploitation of CVE-2024-42267 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-42267, DEBIAN-CVE-2024-42267, GHSA-cj67-x3pw-qjqp, ROOT-OS-DEBIAN-11-CVE-2024-42267, UBUNTU-CVE-2024-42267.