Do NULL pointer check before the pointer is used to avoid dereferenced.
Cc: Jaben Carsey <[email protected]>
Cc: Ruiyu Ni <[email protected]>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Qiu Shumin <[email protected]>
---
ShellPkg/Library/UefiShellLib/UefiShellLib.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/ShellPkg/Library/UefiShellLib/UefiShellLib.c
b/ShellPkg/Library/UefiShellLib/UefiShellLib.c
index 70852a9..cf89a4a 100644
--- a/ShellPkg/Library/UefiShellLib/UefiShellLib.c
+++ b/ShellPkg/Library/UefiShellLib/UefiShellLib.c
@@ -4071,7 +4071,7 @@ ShellFileHandleReturnLine(
Status = ShellFileHandleReadLine(Handle, RetVal, &Size, FALSE, Ascii);
}
- if (Status == EFI_END_OF_FILE && *RetVal != CHAR_NULL) {
+ if (Status == EFI_END_OF_FILE && RetVal != NULL && *RetVal != CHAR_NULL) {
Status = EFI_SUCCESS;
}
if (EFI_ERROR(Status) && (RetVal != NULL)) {
--
2.7.1.windows.2
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