From fbaf0bb26397aa498eb9156f06d5a6fe34dd7dd8 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 19 Apr 2024 03:14:29 +0200
Subject: Merging upstream version 125.0.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 gfx/ots/src/ots.h | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

(limited to 'gfx/ots/src/ots.h')

diff --git a/gfx/ots/src/ots.h b/gfx/ots/src/ots.h
index 434e068d48..7e3625c737 100644
--- a/gfx/ots/src/ots.h
+++ b/gfx/ots/src/ots.h
@@ -87,8 +87,7 @@ class Buffer {
     if (n_bytes > 1024 * 1024 * 1024) {
       return OTS_FAILURE();
     }
-    if ((offset_ + n_bytes > length_) ||
-        (offset_ > length_ - n_bytes)) {
+    if (length_ < n_bytes || offset_ > length_ - n_bytes) {
       return OTS_FAILURE();
     }
     if (buf) {
@@ -99,7 +98,7 @@ class Buffer {
   }
 
   inline bool ReadU8(uint8_t *value) {
-    if (offset_ + 1 > length_) {
+    if (length_ < 1 || offset_ > length_ - 1) {
       return OTS_FAILURE();
     }
     *value = buffer_[offset_];
@@ -108,7 +107,7 @@ class Buffer {
   }
 
   bool ReadU16(uint16_t *value) {
-    if (offset_ + 2 > length_) {
+    if (length_ < 2 || offset_ > length_ - 2) {
       return OTS_FAILURE();
     }
     std::memcpy(value, buffer_ + offset_, sizeof(uint16_t));
@@ -122,7 +121,7 @@ class Buffer {
   }
 
   bool ReadU24(uint32_t *value) {
-    if (offset_ + 3 > length_) {
+    if (length_ < 3 || offset_ > length_ - 3) {
       return OTS_FAILURE();
     }
     *value = static_cast<uint32_t>(buffer_[offset_]) << 16 |
@@ -133,7 +132,7 @@ class Buffer {
   }
 
   bool ReadU32(uint32_t *value) {
-    if (offset_ + 4 > length_) {
+    if (length_ < 4 || offset_ > length_ - 4) {
       return OTS_FAILURE();
     }
     std::memcpy(value, buffer_ + offset_, sizeof(uint32_t));
@@ -147,7 +146,7 @@ class Buffer {
   }
 
   bool ReadR64(uint64_t *value) {
-    if (offset_ + 8 > length_) {
+    if (length_ < 8 || offset_ > length_ - 8) {
       return OTS_FAILURE();
     }
     std::memcpy(value, buffer_ + offset_, sizeof(uint64_t));
-- 
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