avidec: Make sure a packet is large enough before reading its data
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
(cherry picked from commit 8d07258bb6
)
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Conflicts:
libavformat/avidec.c
This commit is contained in:

committed by
Luca Barbato

parent
60701469ab
commit
2e4c649b3e
@@ -752,8 +752,10 @@ static int avi_read_header(AVFormatContext *s)
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return 0;
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}
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static int read_gab2_sub(AVStream *st, AVPacket *pkt) {
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if (!strcmp(pkt->data, "GAB2") && AV_RL16(pkt->data+5) == 2) {
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static int read_gab2_sub(AVStream *st, AVPacket *pkt)
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{
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if (pkt->size >= 7 &&
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!strcmp(pkt->data, "GAB2") && AV_RL16(pkt->data + 5) == 2) {
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uint8_t desc[256];
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int score = AVPROBE_SCORE_MAX / 2, ret;
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AVIStream *ast = st->priv_data;
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