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authorKyle Moffett <Kyle.D.Moffett@boeing.com>2011-02-23 06:18:24 +0000
committerGerald Van Baren <gvb@unssw.com>2011-04-17 21:08:41 -0400
commitd13ffa66aff1d9aed9081986492fb74c1a61a4a9 (patch)
treeadae07a5ad3c6ba229830445e8a41208416e267c /common
parent73e5476e1edf1b860dbd9b5fc21ef32ac1b551ba (diff)
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fdt_support: Fix buffer overflow in fdt_fixup_memory_banks
When fdt_fixup_memory_banks is called with 2-cell address and size fields in the device-tree (IE: 64-bit address and size), then it will overflow its on-stack "tmp" buffer. This fixes the buffer size and adds a comment explaining how many bytes need to be allocated per record. Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Cc: Jerry Van Baren <vanbaren@cideas.com> Acked-by: Gerald Van Baren <vanbaren@cideas.com>
Diffstat (limited to 'common')
-rw-r--r--common/fdt_support.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/common/fdt_support.c b/common/fdt_support.c
index 6c98e5b..edcf04a 100644
--- a/common/fdt_support.c
+++ b/common/fdt_support.c
@@ -394,7 +394,7 @@ int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks)
{
int err, nodeoffset;
int addr_cell_len, size_cell_len, len;
- u8 tmp[banks * 8];
+ u8 tmp[banks * 16]; /* Up to 64-bit address + 64-bit size */
int bank;
err = fdt_check_header(blob);