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-rw-r--r--ShellPkg/Application/Shell/ShellProtocol.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/ShellPkg/Application/Shell/ShellProtocol.c b/ShellPkg/Application/Shell/ShellProtocol.c
index 0a19793..52904e9 100644
--- a/ShellPkg/Application/Shell/ShellProtocol.c
+++ b/ShellPkg/Application/Shell/ShellProtocol.c
@@ -467,7 +467,9 @@ EfiShellGetFilePathFromDevicePath(
// If necessary, add a "\", but otherwise don't
// (This is specified in the above section, and also implied by the
// UEFI Shell spec section 3.7)
- if ((PathForReturn[PathSize - 1] != L'\\') &&
+ if ((PathSize != 0) &&
+ (PathForReturn != NULL) &&
+ (PathForReturn[PathSize - 1] != L'\\') &&
(AlignedNode->PathName[0] != L'\\')) {
PathForReturn = StrnCatGrow (&PathForReturn, &PathSize, L"\\", 1);
}