CVE-2026-43063 xfs: don't irele after failing to iget in xfs_attri_recover_work
A use-after-free vulnerability in the Linux kernel XFS filesystem allows attackers to cause a denial of service or potentially execute code via crafted filesystem operations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-43063?
CVE-2026-43063 is a high-severity use after free vulnerability in Linux kernel, published on 5 May 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
In the Linux kernel, the following vulnerability has been resolved:
xfs: don't irele after failing to iget in xfs_attri_recover_work
xlog_recovery_iget* never set @ip to a valid pointer if they return an error, so this irele will walk off a dangling pointer. Fix that.
Weakness: CWE-416
Which versions are affected by CVE-2026-43063?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-43063?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-43063 being exploited?
There is no known exploitation of CVE-2026-43063 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-43063, DEBIAN-CVE-2026-43063, GHSA-84jf-h474-jrh8, UBUNTU-CVE-2026-43063.