The vulnerability of the cifs_compose_mount_options() function in the fs/cifs/cifs_dfs_ref.c module of the Linux kernel file system allows a hacker to cause a service failure.

The vulnerability of the cifscomposemountoptions function in the fs/cifs/cifsdfsref.c module of the Linux file system support module is related to the use of a NULL pointer. Exploiting this vulnerability could allow an attacker to cause a service failure...

CVE-2021-47307 cifs: prevent NULL deref in cifs_compose_mount_options()

In the Linux kernel, the following vulnerability has been resolved: cifs: prevent NULL deref in cifscomposemountoptions The optional @ref parameter might contain an NULL nodename, so prevent dereferencing it in cifscomposemountoptions. Addresses-Coverity: 1476408 "Explicit null dereferenced"...