From: Azat Khuzhin <a3at.mail@gmail.com>
Date: Wed, 10 May 2023 13:29:23 +0000 (+0200)
Subject: Fix use-of-uninitialized-value due to getData128()
X-Git-Tag: vectorscan/5.4.10~1^2~6^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F148%2Fhead;p=thirdparty%2Fvectorscan.git

Fix use-of-uninitialized-value due to getData128()

When temporary buffer is used in getData128(), then it may return
uninitialized data.

Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
---

diff --git a/src/rose/program_runtime.c b/src/rose/program_runtime.c
index f607e8f2..87dc0c4d 100644
--- a/src/rose/program_runtime.c
+++ b/src/rose/program_runtime.c
@@ -959,7 +959,7 @@ m128 getData128(const struct core_info *ci, s64a offset, u32 *valid_data_mask) {
         *valid_data_mask = 0xffff;
         return loadu128(ci->buf + offset);
     }
-    ALIGN_DIRECTIVE u8 data[sizeof(m128)];
+    ALIGN_DIRECTIVE u8 data[sizeof(m128)] = { 0 };
     *valid_data_mask = getBufferDataComplex(ci, offset, data, 16);
     return *(m128 *)data;
 }