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- Acquire the PEB lock before reading Peb->ProcessParameters->Environment in RtlQueryEnvironmentVariable_U. Patch by Mark Jansen.
CORE-10381

svn path=/trunk/; revision=69939
This commit is contained in:
Thomas Faber 2015-11-19 16:03:21 +00:00
parent bd198a5fd5
commit 84db6add79
1 changed files with 3 additions and 2 deletions
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5
reactos/lib/rtl/env.c
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@ -524,6 +524,7 @@ RtlQueryEnvironmentVariable_U(PWSTR Environment,
{ {
PPEB Peb = RtlGetCurrentPeb(); PPEB Peb = RtlGetCurrentPeb();
if (Peb) { if (Peb) {
RtlAcquirePebLock();
Environment = Peb->ProcessParameters->Environment; Environment = Peb->ProcessParameters->Environment;
SysEnvUsed = TRUE; SysEnvUsed = TRUE;
} }
@ -531,12 +532,12 @@ RtlQueryEnvironmentVariable_U(PWSTR Environment,
if (Environment == NULL) if (Environment == NULL)
{ {
if (SysEnvUsed)
RtlReleasePebLock();
return(STATUS_VARIABLE_NOT_FOUND); return(STATUS_VARIABLE_NOT_FOUND);
} }
Value->Length = 0; Value->Length = 0;
if (SysEnvUsed)
RtlAcquirePebLock();
wcs = Environment; wcs = Environment;
DPRINT("Starting search at :%p\n", wcs); DPRINT("Starting search at :%p\n", wcs);