On 11/17/20 3:42 PM, Mark Jonas wrote: > From: Wang Xin <xin.wang7@xxxxxxxxxxxx> > > The function do_get_nl_link() retrieves attributes from the response > RTM_NEWLINK. But it calculates the attribute list size with the wrong > structure struct ifaddrmsg. According to man 7 rtnetlink, RTM_NEWLINK > message uses struct ifinfomsg instead of struct ifaddrmsg. This causes > that additional 8 bytes are parsed and garbage attributes might be > retrieved. One of consequences is that the message will be dropped if > the garbage attribute is IFLA_IFNAME and contains an invalid interface > name. > > To fix this issue, use struct ifinfomsg to calculate the size of > attribute list for RTM_NEWLINK. > > Signed-off-by: Wang Xin <xin.wang7@xxxxxxxxxxxx> > Signed-off-by: Mark Jonas <mark.jonas@xxxxxxxxxxxx> Applied to master. Tnx, Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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