Denis Efremov <efremov@xxxxxxxxx> wrote: > memcpy() call with "idata == NULL && ilen == 0" results in undefined > behavior in ar5523_cmd(). For example, NULL is passed in callchain > "ar5523_stat_work() -> ar5523_cmd_write() -> ar5523_cmd()". This patch > adds ilen check before memcpy() call in ar5523_cmd() to prevent an > undefined behavior. > > Cc: Pontus Fuchs <pontus.fuchs@xxxxxxxxx> > Cc: Kalle Valo <kvalo@xxxxxxxxxxxxxx> > Cc: "David S. Miller" <davem@xxxxxxxxxxxxx> > Cc: David Laight <David.Laight@xxxxxxxxxx> > Cc: stable@xxxxxxxxxxxxxxx > Signed-off-by: Denis Efremov <efremov@xxxxxxxxx> > Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx> Patch applied to ath-next branch of ath.git, thanks. 315cee426f87 ar5523: check NULL before memcpy() in ar5523_cmd() -- https://patchwork.kernel.org/patch/11167401/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
