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-rw-r--r--verifier.cpp7
1 files changed, 7 insertions, 0 deletions
diff --git a/verifier.cpp b/verifier.cpp
index 782a83863..23fab07b2 100644
--- a/verifier.cpp
+++ b/verifier.cpp
@@ -79,6 +79,13 @@ int verify_file(const char* path, const Certificate* pKeys, unsigned int numKeys
LOGI("comment is %d bytes; signature %d bytes from end\n",
comment_size, signature_start);
+ if (signature_start > comment_size) {
+ LOGE("signature start: %zu is larger than comment size: %zu\n", signature_start,
+ comment_size);
+ fclose(f);
+ return VERIFY_FAILURE;
+ }
+
if (signature_start - FOOTER_SIZE < RSANUMBYTES) {
// "signature" block isn't big enough to contain an RSA block.
LOGE("signature is too short\n");