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Added ntdll-RtlFirstFreeAce patchset

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This commit is contained in:
Alistair Leslie-Hughes
2021-03-04 12:06:54 +11:00
parent 404b698d44
commit 64efb6f0d3
4 changed files with 71 additions and 0 deletions
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25
patches/ntdll-RtlFirstFreeAce/0001-ntdll-Check-return-parameter-before-use.patch Normal file
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@@ -0,0 +1,25 @@
From 240b46c41f284b6ff96b990b9b719a18919fb6dd Mon Sep 17 00:00:00 2001
From: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>
Date: Wed, 3 Mar 2021 08:56:39 +1100
Subject: [PATCH 1/2] ntdll: Check return parameter before use
---
dlls/ntdll/sec.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/dlls/ntdll/sec.c b/dlls/ntdll/sec.c
index eccfc82ce8c..5c1c9b1fbb0 100644
--- 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++;
--
2.30.1

28
patches/ntdll-RtlFirstFreeAce/0002-ntdll-RtlFirstFreeAce-only-return-FALSE-on-error.patch Normal file
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@@ -0,0 +1,28 @@
From 0d2d659fbfb73fe046626d256ca5ee2878d9288b Mon Sep 17 00:00:00 2001
From: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>
Date: Mon, 8 Feb 2021 13:16:52 +1100
Subject: [PATCH 2/2] ntdll: RtlFirstFreeAce only return FALSE on error
---
dlls/ntdll/sec.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/dlls/ntdll/sec.c b/dlls/ntdll/sec.c
index 5c1c9b1fbb0..9cebcb4f58e 100644
--- a/dlls/ntdll/sec.c
+++ b/dlls/ntdll/sec.c
@@ -1149,9 +1149,8 @@ BOOLEAN WINAPI RtlFirstFreeAce(
return FALSE;
ace = (PACE_HEADER)(((BYTE*)ace)+ace->AceSize);
}
- if ((BYTE *)ace >= (BYTE *)acl + acl->AclSize)
- return FALSE;
- *x = ace;
+ if ((BYTE *)ace <= (BYTE *)acl + acl->AclSize)
+ *x = ace;
return TRUE;
}
--
2.30.1

1
patches/ntdll-RtlFirstFreeAce/definition Normal file
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Fixes: [50624] Waves Central 12.0.5 fails to start.