CVE-2026-46150 fanotify: fix false positive on permission events
A flaw in the Linux kernel fanotify subsystem allows bypassing permission checks, potentially enabling unauthorized access to protected resources.
- 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-2026-46150?
CVE-2026-46150 is a high-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:
fanotify: fix false positive on permission events
fsnotify_get_mark_safe() may return false for a mark on an unrelated group, which results in bypassing the permission check.
Fix by skipping over detached marks that are not in the current group.
Weakness: CWE-863
Which versions are affected by CVE-2026-46150?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-46150?
Apply the vendor's patch.
Is CVE-2026-46150 being exploited?
There is no known exploitation of CVE-2026-46150 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-89127, BELL-CVE-2026-46150, DEBIAN-CVE-2026-46150, GHSA-97pw-xx9j-rg9j, ROOT-OS-DEBIAN-11-CVE-2026-46150, ROOT-OS-DEBIAN-12-CVE-2026-46150 and 3 more.