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-rw-r--r--src/archive.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/archive.c b/src/archive.c
index b1f9c30..9196cb2 100644
--- a/src/archive.c
+++ b/src/archive.c
@@ -159,8 +159,9 @@ static void handle_extended_header(struct apk_file_info *fi, apk_blob_t hdr)
unsigned int len = apk_blob_pull_uint(&hdr, 10);
apk_blob_pull_char(&hdr, ' ');
if (!apk_blob_split(hdr, APK_BLOB_STR("="), &name, &hdr)) break;
+ if (len < hdr.ptr - start + 1) break;
len -= hdr.ptr - start + 1;
- if (len < 0 || hdr.len < len) break;
+ if (hdr.len < len) break;
value = APK_BLOB_PTR_LEN(hdr.ptr, len);
hdr = APK_BLOB_PTR_LEN(hdr.ptr+len, hdr.len-len);
apk_blob_pull_char(&hdr, '\n');