CVE-2026-46005 xfs: fix a resource leak in xfs_alloc_buftarg()
A resource leak in the Linux kernel XFS filesystem can lead to memory exhaustion and denial of service.
- 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-2026-46005?
CVE-2026-46005 is a medium-severity denial of service vulnerability in Linux kernel, published on 27 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:
xfs: fix a resource leak in xfs_alloc_buftarg()
In the error path, call fs_put_dax() to drop the DAX device reference.
Weakness: CWE-401
Which versions are affected by CVE-2026-46005?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-46005?
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-2026-46005 being exploited?
There is no known exploitation of CVE-2026-46005 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-88656, BELL-CVE-2026-46005, DEBIAN-CVE-2026-46005, GHSA-3v87-wmqv-57cx, ROOT-OS-DEBIAN-12-CVE-2026-46005, ROOT-OS-UBUNTU-2404-CVE-2026-46005 and 1 more.