28 lines
929 B
Diff
28 lines
929 B
Diff
From 28ac93e737ae4e2055ff23f2ea6021b1127b40a2 Mon Sep 17 00:00:00 2001
|
|
From: Rod Smith <rodsmith@rodsbooks.com>
|
|
Date: Wed, 13 Jan 2021 10:29:24 -0500
|
|
Subject: [PATCH 2/2] Fix bug that could cause crash if a badly-formatted MBR
|
|
disk was read.
|
|
|
|
---
|
|
basicmbr.cc | 3 ++-
|
|
1 file changed, 2 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/basicmbr.cc b/basicmbr.cc
|
|
index 8fbffd1..2da56db 100644
|
|
--- a/basicmbr.cc
|
|
+++ b/basicmbr.cc
|
|
@@ -258,7 +258,8 @@ int BasicMBRData::ReadLogicalParts(uint64_t extendedStart, int partNum) {
|
|
if (EbrLocations[i] == offset) { // already read this one; infinite logical partition loop!
|
|
cerr << "Logical partition infinite loop detected! This is being corrected.\n";
|
|
allOK = -1;
|
|
- partNum -= 1;
|
|
+ if (partNum > 0) //don't go negative
|
|
+ partNum -= 1;
|
|
} // if
|
|
} // for
|
|
EbrLocations[partNum] = offset;
|
|
--
|
|
2.35.1
|
|
|