CVE-2024-46696: nfsd: fix potential UAF in nfsd4_cb_getattr_release

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-09-13 · updated 2026-08-04
Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix potential UAF in nfsd4_cb_getattr_release Once we drop the delegation reference, the fields embedded in it are no longer safe to access. Do that last.

Affected products

Linux kernel: from 6.9 before 6.10.8; 6.11-rc1, 6.11-rc2, 6.11-rc3, 6.11-rc4, 6.11-rc5 — fixed in 6.10.8

How to fix

Upgrade to a fixed version: Linux kernel 6.10.8. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/1116e0e372eb16dd907ec571ce5d4af325c55c10
https://git.kernel.org/stable/c/e0b66698a5ae41078f7490e8b3527013f5fccd6c

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