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Single device tree fix for 4.0

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A single patch to avoid an overflow when loading device trees.
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Merge remote-tracking branch 'remotes/alistair/tags/pull-device-tree-20190409-1' into staging

Single device tree fix for 4.0

A single patch to avoid an overflow when loading device trees.

# gpg: Signature made Wed 10 Apr 2019 00:52:16 BST
# gpg:                using RSA key F6C4AC46D4934868D3B8CE8F21E10D29DF977054
# gpg: Good signature from "Alistair Francis <alistair@alistair23.me>" [full]
# Primary key fingerprint: F6C4 AC46 D493 4868 D3B8  CE8F 21E1 0D29 DF97 7054

* remotes/alistair/tags/pull-device-tree-20190409-1:
  device_tree: Fix integer overflowing in load_device_tree()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2019-04-10 08:57:19 +01:00
commit 6523516f32
1 changed files with 4 additions and 0 deletions
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4
device_tree.c
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@ -84,6 +84,10 @@ void *load_device_tree(const char *filename_path, int *sizep)
filename_path);
goto fail;
}
if (dt_size > INT_MAX / 2 - 10000) {
error_report("Device tree file '%s' is too large", filename_path);
goto fail;
}
/* Expand to 2x size to give enough room for manipulation. */
dt_size += 10000;