Vulnerability CVE-2021-47167
Published: 2024-03-25

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

NFS: Fix an Oopsable condition in __nfs_pageio_add_request()

Ensure that nfs_pageio_error_cleanup() resets the mirror array contents,
so that the structure reflects the fact that it is now empty.
Also change the test in nfs_pageio_do_add_request() to be more robust by
checking whether or not the list is empty rather than relying on the
value of pg_count.

 References:
https://git.kernel.org/stable/c/1fc5f4eb9d31268ac3ce152d74ad5501ad24ca3e
https://git.kernel.org/stable/c/ee21cd3aa8548e0cbc8c67a80b62113aedd2d101
https://git.kernel.org/stable/c/15ac6f14787649e8ebd75c142e2c5d2a243c8490
https://git.kernel.org/stable/c/56517ab958b7c11030e626250c00b9b1a24b41eb
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