CVE-2022-49316 NFSv4: Don't hold the layoutget locks across multiple RPC calls

What is CVE-2022-49316?

CVE-2022-49316 is a medium-severity vulnerability in Linux kernel, published on 26 Feb 2025. 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:

NFSv4: Don't hold the layoutget locks across multiple RPC calls

When doing layoutget as part of the open() compound, we have to be careful to release the layout locks before we can call any further RPC calls, such as setattr(). The reason is that those calls could trigger a recall, which could deadlock.

Weakness: CWE-667

Which versions are affected by CVE-2022-49316?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-49316?

Apply the vendor's patch.

Is CVE-2022-49316 being exploited?

There is no known exploitation of CVE-2022-49316 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2022-49316, GHSA-grrp-5mc5-ccmg, UBUNTU-CVE-2022-49316.