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Description: xprtrdma: Wrong copy function used in sysctl handler
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=2048359
 https://bugs.centos.org/view.php?id=18395
Notes:
 bwh> This issue is specific to CentOS/RHEL. In mainline,
 bwh> xprtrdma always used copy_to_user() until the general
 bwh> conversion of sysctls to use a kernel buffer.
Bugs:
upstream: N/A "Vulnerability never present"
5.10-upstream-stable: N/A "Vulnerability never present"
4.19-upstream-stable: N/A "Vulnerability never present"
4.9-upstream-stable: N/A "Vulnerability never present"
sid: N/A "Vulnerability never present"
5.10-bullseye-security: N/A "Vulnerability never present"
4.19-buster-security: N/A "Vulnerability never present"
4.9-stretch-security: N/A "Vulnerability never present"

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