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avformat/aviobuf: Fix end check in put_str16()

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Fixes out of array read
Fixes: 03c406ec9530e594a074ce2979f8a1f0/asan_heap-oob_7dec26_4664_37c52495b2870a2eaac65f53958e76c1.flac

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 115fb6d03e)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-01-13 02:31:59 +01:00
parent f1cdd93517
commit a2b234b917
1 changed files with 2 additions and 0 deletions
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2
libavformat/aviobuf.c
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@ -359,6 +359,8 @@ static inline int put_str16(AVIOContext *s, const char *str, const int be)
invalid:
av_log(s, AV_LOG_ERROR, "Invaid UTF8 sequence in avio_put_str16%s\n", be ? "be" : "le");
err = AVERROR(EINVAL);
if (!*(q-1))
break;
}
if (be)
avio_wb16(s, 0);