firewire: fix potential uaf in outbound_phy_packet_callback()
&e->event and e point to the same address, and &e->event could be freed in queue_event. So there is a potential uaf issue if we dereference e after calling queue_event(). Fix this by adding a temporary variable to maintain e->client in advance, this can avoid the potential uaf issue. Cc: <stable@vger.kernel.org> Signed-off-by:Chengfeng Ye <cyeaa@connect.ust.hk> Signed-off-by:
Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20220409041243.603210-2-o-takashi@sakamocchi.jp Signed-off-by:
Takashi Iwai <tiwai@suse.de>
parent
31231092
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