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avformat/hls: Check for integer overflow with #EXTINF:

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Found-by: 이동준 <ldj6192@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit f112ae503e)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2026-02-04 16:43:39 +01:00
parent 93818dbb61
commit 5d6c488db7
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GPG key ID: B18E8928B3948D64
1 changed files with 6 additions and 1 deletions
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7
libavformat/hls.c
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@ -929,8 +929,13 @@ static int parse_playlist(HLSContext *c, const char *url,
if (pls)
pls->finished = 1;
} else if (av_strstart(line, "#EXTINF:", &ptr)) {
double d = atof(ptr) * AV_TIME_BASE;
if (d < 0 || d > INT64_MAX || isnan(d)) {
av_log(c->ctx, AV_LOG_WARNING, "EXTINF %f unsupported\n", d / AV_TIME_BASE);
d = 0;
}
duration = d;
is_segment = 1;
duration = atof(ptr) * AV_TIME_BASE;
} else if (av_strstart(line, "#EXT-X-BYTERANGE:", &ptr)) {
seg_size = strtoll(ptr, NULL, 10);
ptr = strchr(ptr, '@');