CVE-2024-42078: nfsd: initialise nfsd_info.mutex early.

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-07-29 · updated 2026-06-17
Weakness: CWE-665

Description

In the Linux kernel, the following vulnerability has been resolved: nfsd: initialise nfsd_info.mutex early. nfsd_info.mutex can be dereferenced by svc_pool_stats_start() immediately after the new netns is created. Currently this can trigger an oops. Move the initialisation earlier before it can possibly be dereferenced.

Affected products

Linux kernel: before 6.8; from 6.9 before 6.9.8 — fixed in 6.8, 6.9.8

How to fix

Upgrade to a fixed version: Linux kernel 6.8, 6.9.8. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/7e8b94045bc77ce4f085ddfb9eb04e5760e66169
https://git.kernel.org/stable/c/e0011bca603c101f2a3c007bdb77f7006fa78fb1
https://git.kernel.org/stable/c/7e8b94045bc77ce4f085ddfb9eb04e5760e66169
https://git.kernel.org/stable/c/e0011bca603c101f2a3c007bdb77f7006fa78fb1

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