Module: libav Branch: release/10 Commit: bac0850fbf870d4354d0f68840c0b1c9c1425c4a
Author: Thomas Guillem <[email protected]> Committer: Anton Khirnov <[email protected]> Date: Fri Apr 10 19:04:51 2015 +0200 matroskadec: fix crash when parsing invalid mkv CC: [email protected] Signed-off-by: Anton Khirnov <[email protected]> (cherry picked from commit b8d7f3186e86234f6255f5e8ee9e98573b4d9a6e) Signed-off-by: Anton Khirnov <[email protected]> (cherry picked from commit 3e1c9da38b849ce2982b516004370081fdd89ed0) Signed-off-by: Anton Khirnov <[email protected]> Conflicts: libavformat/matroskadec.c --- libavformat/matroskadec.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c index 22902e0..ad83af4 100644 --- a/libavformat/matroskadec.c +++ b/libavformat/matroskadec.c @@ -1412,8 +1412,12 @@ static int matroska_read_header(AVFormatContext *s) matroska->ctx = s; /* First read the EBML header. */ - if (ebml_parse(matroska, ebml_syntax, &ebml) - || ebml.version > EBML_VERSION || ebml.max_size > sizeof(uint64_t) + if (ebml_parse(matroska, ebml_syntax, &ebml) || !ebml.doctype) { + av_log(matroska->ctx, AV_LOG_ERROR, "EBML header parsing failed\n"); + ebml_free(ebml_syntax, &ebml); + return AVERROR_INVALIDDATA; + } + if (ebml.version > EBML_VERSION || ebml.max_size > sizeof(uint64_t) || ebml.id_length > sizeof(uint32_t) || ebml.doctype_version > 2) { av_log(matroska->ctx, AV_LOG_ERROR, "EBML header using unsupported features\n" _______________________________________________ libav-commits mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-commits
