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- Fix over-reading the input buffer (sometimes by even more than 400 bytes), and hashing random pool contents instead of the specified buffer.

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svn path=/trunk/; revision=35831
This commit is contained in:
Aleksey Bragin 2008-08-31 11:55:17 +00:00
parent b93a09c0b1
commit e1b80cf07e
1 changed files with 4 additions and 3 deletions
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7
reactos/ntoskrnl/ob/obsdcach.c
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@ -81,11 +81,12 @@ ObpHash(IN PVOID Buffer,
PULONG p, pp;
PUCHAR pb, ppb;
ULONG Hash = 0;
/* Setup aligned and byte buffers */
p = Buffer;
pb = (PUCHAR)p;
ppb = (PUCHAR)((ULONG_PTR)Buffer + Length);
pp = (PULONG)ALIGN_DOWN(p + Length, ULONG);
pp = (PULONG)ALIGN_DOWN(pb + Length, ULONG);
/* Loop aligned data */
while (p < pp)
@ -94,7 +95,7 @@ ObpHash(IN PVOID Buffer,
Hash ^= *p++;
Hash = _rotl(Hash, 3);
}
/* Loop non-aligned data */
pb = (PUCHAR)p;
while (pb < ppb)