https://git.reactos.org/?p=reactos.git;a=commitdiff;h=f8a4d31da489660d48975a685da49fb1f4748685
commit f8a4d31da489660d48975a685da49fb1f4748685 Author: Pierre Schweitzer <[email protected]> AuthorDate: Sun Jun 2 09:50:05 2019 +0200 Commit: Pierre Schweitzer <[email protected]> CommitDate: Sun Jun 2 10:00:17 2019 +0200 [NTOSKRNL] On process primary token change, dereference device map --- ntoskrnl/ps/security.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/ntoskrnl/ps/security.c b/ntoskrnl/ps/security.c index e245dde563f..619ff56d247 100644 --- a/ntoskrnl/ps/security.c +++ b/ntoskrnl/ps/security.c @@ -325,6 +325,14 @@ PspSetPrimaryToken(IN PEPROCESS Process, STANDARD_RIGHTS_ALL | PROCESS_SET_QUOTA); } + + /* + * In case LUID device maps are enable, we may not be using + * system device map for this process, but a logon LUID based + * device map. Because we change primary token, this usage is + * no longer valid, so dereference the process device map + */ + if (ObIsLUIDDeviceMapsEnabled()) ObDereferenceDeviceMap(Process); } /* Dereference the token */
