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

NFS: Fix a potential NULL dereference in nfs_get_client()

None of the callers are expecting NULL returns from nfs_get_client() so
this code will lead to an Oops. It's better to return an error
pointer. I expect that this is dead code so hopefully no one is
affected.

References

• https://nvd.nist.gov/vuln/detail/CVE-2021-47260
• https://git.kernel.org/stable/c/0057ecef9f324007c0ba5fcca4ddd131178ce78b
• https://git.kernel.org/stable/c/09226e8303beeec10f2ff844d2e46d1371dc58e0
• https://git.kernel.org/stable/c/279ad78a00f8b9c5ff24171a59297187a3bd44b7
• https://git.kernel.org/stable/c/4b380a7d84ef2ce3f4f5bec5d8706ed937ac6502
• https://git.kernel.org/stable/c/58ddf61f10b8f9b7b1341644bfee2f1c6508d4e1
• https://git.kernel.org/stable/c/634f17ff1d59905eb3b4bbbc00805961d08beaee
• https://git.kernel.org/stable/c/a979e601000982a3ca693171a6d4dffc47f8ad00
• https://git.kernel.org/stable/c/fab8bfdfb4aac9e4e8363666333adfdf21e89106