CVE-2024-46697: nfsd: ensure that nfsd4_fattr_args.context is zeroed out

Severity: medium (CVSS 5.5 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-665

Description

In the Linux kernel, the following vulnerability has been resolved: nfsd: ensure that nfsd4_fattr_args.context is zeroed out If nfsd4_encode_fattr4 ends up doing a "goto out" before we get to checking for the security label, then args.context will be set to uninitialized junk on the stack, which we'll then try to free. Initialize it early.

Affected products

Linux kernel: from 6.7 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

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