https://git.reactos.org/?p=reactos.git;a=commitdiff;h=5a440b2d9014078e600fa2b97f32d5aa9c94d5d8
commit 5a440b2d9014078e600fa2b97f32d5aa9c94d5d8 Author: Katayama Hirofumi MZ <[email protected]> AuthorDate: Wed Mar 11 07:36:07 2020 +0900 Commit: Katayama Hirofumi MZ <[email protected]> CommitDate: Wed Mar 11 07:36:07 2020 +0900 [SHLWAPI] Follow-up of #2430 Add a NULL check in SHLockSharedEx function. CORE-13950 --- dll/win32/shlwapi/ordinal.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/dll/win32/shlwapi/ordinal.c b/dll/win32/shlwapi/ordinal.c index 8773234e2df..216e7e56a62 100644 --- a/dll/win32/shlwapi/ordinal.c +++ b/dll/win32/shlwapi/ordinal.c @@ -259,6 +259,8 @@ PVOID WINAPI SHLockShared(HANDLE hShared, DWORD dwProcId) /* Get handle to shared memory for current process */ hDup = SHMapHandle(hShared, dwProcId, GetCurrentProcessId(), FILE_MAP_ALL_ACCESS, 0); + if (hDup == NULL) + return NULL; /* Get View */ pMapped = MapViewOfFile(hDup, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, 0);
