CVE-2022-49451 firmware: arm_scmi: Fix list protocols enumeration in the base protocol
An integer overflow in the Linux kernel SCMI driver allows bypassing protocol enumeration validation, potentially leading to security bypass.
- 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-2022-49451?
CVE-2022-49451 is a high-severity vulnerability in Linux kernel, published on 26 Feb 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:
firmware: arm_scmi: Fix list protocols enumeration in the base protocol
While enumerating protocols implemented by the SCMI platform using BASE_DISCOVER_LIST_PROTOCOLS, the number of returned protocols is currently validated in an improper way since the check employs a sum between unsigned integers that could overflow and cause the check itself to be silently bypassed if the returned value 'loop_num_ret' is big enough.
Fix the validation avoiding the addition.
Weakness: CWE-190
Which versions are affected by CVE-2022-49451?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49451?
Apply the vendor's patch.
Is CVE-2022-49451 being exploited?
There is no known exploitation of CVE-2022-49451 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49451, GHSA-wx8p-85p4-gfr8, UBUNTU-CVE-2022-49451.