CVE-2024-26823 irqchip/gic-v3-its: Restore quirk probing for ACPI-based systems
A regression in the Linux kernel's GICv3 ITS driver causes boot failures or loss of functionality on certain ACPI-based systems.
- 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-2024-26823?
CVE-2024-26823 is a high-severity denial of service vulnerability in Linux kernel, published on 17 Apr 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:
irqchip/gic-v3-its: Restore quirk probing for ACPI-based systems
While refactoring the way the ITSs are probed, the handling of quirks applicable to ACPI-based platforms was lost. As a result, systems such as HIP07 lose their GICv4 functionnality, and some other may even fail to boot, unless they are configured to boot with DT.
Move the enabling of quirks into its_probe_one(), making it common to all firmware implementations.
Which versions are affected by CVE-2024-26823?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-26823?
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-2024-26823 being exploited?
There is no known exploitation of CVE-2024-26823 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-26823, DEBIAN-CVE-2024-26823, GHSA-xcf9-x48q-v8xv, UBUNTU-CVE-2024-26823.