CVE-2026-64225 octeontx2-af: CGX: add bounds check to cgx_speed_mbps index
An out-of-bounds array access in the OcteonTX2 AF driver allows attackers to cause a denial of service or potential memory corruption via crafted link speed values.
- 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-2026-64225?
CVE-2026-64225 is a high-severity vulnerability in Linux kernel, published on 24 Jul 2026. 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:
octeontx2-af: CGX: add bounds check to cgx_speed_mbps index
cgx_speed_mbps has 13 elements but RESP_LINKSTAT_SPEED can yield values 0-15. If it returns a value >= 13, this causes an out-of-bounds array access. Add a bounds check and default to speed 0 if the index is out of range.
Weakness: CWE-129
Which versions are affected by CVE-2026-64225?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-64225?
Apply the vendor's patch.
Is CVE-2026-64225 being exploited?
There is no known exploitation of CVE-2026-64225 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-64225, DEBIAN-CVE-2026-64225, GHSA-wpwr-3cwm-vhj2, ROOT-OS-UBUNTU-2204-CVE-2026-64225, UBUNTU-CVE-2026-64225.