ntdll: Check return parameter before use.

0cbfd7ab · Alistair Leslie-Hughes · Alexandre Julliard · 8a4433d6 · 0cbfd7ab
Commit 0cbfd7ab authored Mar 03, 2021 by Alistair Leslie-Hughes Committed by Alexandre Julliard Jul 19, 2022
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sec.c dlls/ntdll/sec.c +2 -0

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--- a/dlls/ntdll/sec.c
+++ b/dlls/ntdll/sec.c
@@ -1172,6 +1172,8 @@ NTSTATUS WINAPI RtlAddAce(
 		return STATUS_INVALID_PARAMETER;
 	if (!RtlFirstFreeAce(acl,&targetace))
 		return STATUS_INVALID_PARAMETER;
+	if (!targetace)
+		return STATUS_ALLOTTED_SPACE_EXCEEDED;
 	nrofaces=0;ace=acestart;
 	while (((BYTE *)ace - (BYTE *)acestart) < acelen) {
 		nrofaces++;