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tools: hv: Netlink source address validation allows DoS
The source code without this patch caused hypervkvpd to exit when it processed a spoofed Netlink packet which has been sent from an untrusted local user. Now Netlink messages with a non-zero nl_pid source address are ignored and a warning is printed into the syslog. Signed-off-by: Tomas Hozza <email@example.com> Acked-by: K. Y. Srinivasan <firstname.lastname@example.org> Signed-off-by: Greg Kroah-Hartman <email@example.com>
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