When LinearAddress or Length is not aligned on 4KB, PageTableMap()
should return Invalid Parameter.
Signed-off-by: Zhiguang Liu <zhiguang....@intel.com>
Reviewed-by: Ray Ni <ray...@intel.com>
Cc: Eric Dong <eric.d...@intel.com>
---
UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c
b/UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c
index 25e13a6f6f..17bca5e351 100644
--- a/UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c
+++ b/UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c
@@ -467,6 +467,13 @@ PageTableMap (
return RETURN_INVALID_PARAMETER;
}
+ if ((LinearAddress % SIZE_4KB != 0) || (Length % SIZE_4KB != 0)) {
+ //
+ // LinearAddress and Length should be multiple of 4K.
+ //
+ return RETURN_INVALID_PARAMETER;
+ }
+
if ((*BufferSize != 0) && (Buffer == NULL)) {
return RETURN_INVALID_PARAMETER;
}
--
2.35.1.windows.2
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