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afk: Fix a NULL pointer dereference in adfk_epic_send()

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Signed-off-by: Janne Grunau <j@jannau.net>
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Janne Grunau 2023-08-30 23:13:02 +02:00 • committed by Hector Martin
parent 76fbc77ad2
commit a4c4b8cd99
1 changed files with 6 additions and 4 deletions
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10
src/afk.c
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@ -479,11 +479,13 @@ int afk_epic_command(afk_epic_ep_t *epic, int channel, u16 sub_type, void *txbuf
return rcmd->retcode; // should be negative already return rcmd->retcode; // should be negative already
} }
assert(*rxsize >= rcmd->rxlen); if (rxsize) {
*rxsize = rcmd->rxlen; assert(*rxsize >= rcmd->rxlen);
*rxsize = rcmd->rxlen;
if (rxsize && *rxsize && rcmd->rxbuf) if (*rxsize && rcmd->rxbuf)
memcpy(rxbuf, epic->rxbuf.bfr, *rxsize); memcpy(rxbuf, epic->rxbuf.bfr, *rxsize);
}
afk_epic_rx_ack(epic); afk_epic_rx_ack(epic);