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[NTOS:SE] SeValidSecurityDescriptor: Use relative security descriptor header size for length calculation (#8127)

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Fixes Win2k3 ntfs.sys on x64
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Adam Słaboń 2025-06-18 23:55:27 +02:00 • committed by GitHub
parent b5f763447c
commit 81a4d8344b
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1 changed files with 2 additions and 2 deletions
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ntoskrnl/se/sd.c
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@ -1035,7 +1035,7 @@ SeValidSecurityDescriptor(
if (Length < SECURITY_DESCRIPTOR_MIN_LENGTH) if (Length < SECURITY_DESCRIPTOR_MIN_LENGTH)
{ {
DPRINT1("Invalid Security Descriptor revision\n"); DPRINT1("Invalid Security Descriptor length\n");
return FALSE; return FALSE;
} }
@ -1051,7 +1051,7 @@ SeValidSecurityDescriptor(
return FALSE; return FALSE;
} }
SdLength = sizeof(SECURITY_DESCRIPTOR); SdLength = sizeof(*SecurityDescriptor);
/* Check Owner SID */ /* Check Owner SID */
if (!SecurityDescriptor->Owner) if (!SecurityDescriptor->Owner)