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AVRCP: Check if len matches number of IDs

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If number of attributes remote side provided is larger than the length
we read, we would read garbage from stack memory.
This commit is contained in:
Lucas De Marchi 2011-10-12 12:11:19 -03:00 committed by Johan Hedberg
parent 28b3057757
commit 7cddeb379d
1 changed files with 6 additions and 2 deletions
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8
audio/avrcp.c
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@ -597,12 +597,16 @@ static uint8_t avrcp_handle_get_element_attributes(struct avrcp_player *player,
int size;
unsigned int i;
if (len < 8 || *identifier != 0)
if (len < 9 || *identifier != 0)
goto err;
nattr = pdu->params[8];
if (len < nattr * sizeof(uint32_t) + 1)
goto err;
len = 0;
pos = 1; /* Keep track of current position in reponse */
nattr = pdu->params[8];
if (!nattr) {
/*