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-rw-r--r--media/libstagefright/DRMExtractor.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/media/libstagefright/DRMExtractor.cpp b/media/libstagefright/DRMExtractor.cpp
index 63cb430..9cb6e86 100644
--- a/media/libstagefright/DRMExtractor.cpp
+++ b/media/libstagefright/DRMExtractor.cpp
@@ -186,7 +186,8 @@ status_t DRMSource::read(MediaBuffer **buffer, const ReadOptions *options) {
srcOffset += mNALLengthSize;
- if (srcOffset + nalLength > len) {
+ size_t end = srcOffset + nalLength;
+ if (end > len || end < srcOffset) {
if (decryptedDrmBuffer.data) {
delete [] decryptedDrmBuffer.data;
decryptedDrmBuffer.data = NULL;