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| author | Nick Kralevich <nnk@google.com> | 2015-08-07 11:19:24 -0700 |
|---|---|---|
| committer | Paul Kocialkowski <contact@paulk.fr> | 2015-08-31 00:22:02 +0200 |
| commit | a4ab71c55d743ad4eefa83b9e2861d95520a4e08 (patch) | |
| tree | a01a65b28b1fbc074c8bc2fdeba8e369d2275a7a | |
| parent | 28f82bc8d580a1e7ab2814cd0f75b47d42b2066c (diff) | |
| download | frameworks_av-replicant-4.2.zip frameworks_av-replicant-4.2.tar.gz frameworks_av-replicant-4.2.tar.bz2 | |
MPEG4Extractor.cpp: handle chunk_size > SIZE_MAXreplicant-4.2-0004replicant-4.2
chunk_size is a uint64_t, so it can legitimately be bigger
than SIZE_MAX, which would cause the subtraction to underflow.
https://code.google.com/p/android/issues/detail?id=182251
Bug: 23034759
Change-Id: Ic1637fb26bf6edb0feb1bcf2876fd370db1ed547
Signed-off-by: Nick Kralevich <nnk@google.com>
Tested-by: Moritz Bandemer <replicant@posteo.mx>
| -rw-r--r-- | media/libstagefright/MPEG4Extractor.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/media/libstagefright/MPEG4Extractor.cpp b/media/libstagefright/MPEG4Extractor.cpp index 28c41c4..167fd01 100644 --- a/media/libstagefright/MPEG4Extractor.cpp +++ b/media/libstagefright/MPEG4Extractor.cpp @@ -1502,7 +1502,7 @@ status_t MPEG4Extractor::parseChunk(off64_t *offset, int depth) { size = 0; } - if (SIZE_MAX - chunk_size <= size) { + if ((chunk_size > SIZE_MAX) || (SIZE_MAX - chunk_size <= size)) { return ERROR_MALFORMED; } |