CVE-2026-46128 ipmi: Check event message buffer response for bad data
A missing check for empty IPMI event responses can cause a null pointer dereference, leading to a kernel crash.
- 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-2026-46128?
CVE-2026-46128 is a medium-severity vulnerability in Linux kernel, published on 28 May 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:
ipmi: Check event message buffer response for bad data
The event message buffer response data size got checked later when processing, but check it right after the response comes back. It appears some BMCs may return an empty message instead of an error when fetching events.
There are apparently some new BMCs that make this error, so we need to compensate.
Which versions are affected by CVE-2026-46128?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-46128?
Apply the vendor's patch.
Is CVE-2026-46128 being exploited?
There is no known exploitation of CVE-2026-46128 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-89027, BELL-CVE-2026-46128, DEBIAN-CVE-2026-46128, GHSA-3367-ghgr-fgg3, ROOT-OS-DEBIAN-11-CVE-2026-46128, ROOT-OS-DEBIAN-12-CVE-2026-46128 and 3 more.