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commit 4cdcc7242d8c9e75b073b64a98df0be07b701045 Author: Michael Niedermayer <[email protected]> AuthorDate: Wed Jul 23 13:36:42 2025 +0200 Commit: Michael Niedermayer <[email protected]> CommitDate: Sun Jun 21 17:59:33 2026 +0200 avformat/vqf: Ensure that comm_chunk is fully read Fixes: use of uninitialized memory Fixes: 412125811/clusterfuzz-testcase-minimized-ffmpeg_dem_VQF_fuzzer-6253774274887680 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> (cherry picked from commit 1b7a327b3a43df6ab82885cea5ae02bf9dd899a9) Signed-off-by: Michael Niedermayer <[email protected]> --- libavformat/vqf.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/libavformat/vqf.c b/libavformat/vqf.c index 48942a2822..787aeea0b8 100644 --- a/libavformat/vqf.c +++ b/libavformat/vqf.c @@ -20,6 +20,7 @@ */ #include "avformat.h" +#include "avio_internal.h" #include "internal.h" #include "libavutil/intreadwrite.h" #include "libavutil/dict.h" @@ -141,7 +142,9 @@ static int vqf_read_header(AVFormatContext *s) if (len < 12) return AVERROR_INVALIDDATA; - avio_read(s->pb, comm_chunk, 12); + ret = ffio_read_size(s->pb, comm_chunk, 12); + if (ret < 0) + return ret; st->codecpar->channels = AV_RB32(comm_chunk ) + 1; read_bitrate = AV_RB32(comm_chunk + 4); rate_flag = AV_RB32(comm_chunk + 8); _______________________________________________ ffmpeg-cvslog mailing list -- [email protected] To unsubscribe send an email to [email protected]
