VYPR
Unrated severityNVD Advisory· Published May 21, 2024· Updated May 4, 2025

NFS: Fix use-after-free in nfs4_init_client()

CVE-2021-47259

Description

In the Linux kernel, the following vulnerability has been resolved:

NFS: Fix use-after-free in nfs4_init_client()

KASAN reports a use-after-free when attempting to mount two different exports through two different NICs that belong to the same server.

Olga was able to hit this with kernels starting somewhere between 5.7 and 5.10, but I traced the patch that introduced the clear_bit() call to 4.13. So something must have changed in the refcounting of the clp pointer to make this call to nfs_put_client() the very last one.

Affected products

69

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

6

News mentions

0

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