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software node: Fix software_node_get_reference_args() with index -1

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The bounds check for the index passed to
software_node_get_reference_args() was failing when passed UINT_MAX,
this in turn would lead to an out of bound access in the property
array. Fix the bound check to also cover the UINT_MAX case.

Fixes: 31e4e12e0e ("software node: Correct a OOB check in software_node_get_reference_args()")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/linux-devicetree/20260611103904.7CB131F00893@smtp.kernel.org/
Signed-off-by: Alban Bedel <alban.bedel@lht.dlh.de>
Link: https://patch.msgid.link/20260611164005.2930205-1-alban.bedel@lht.dlh.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alban Bedel
2026-07-18 16:07:22 +02:00
committed by Danilo Krummrich
parent c3a280ff72
commit ba3dedcf3b
1 changed files with 1 additions and 1 deletions
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drivers/base/swnode.c
+1 -1
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@@ -537,7 +537,7 @@ software_node_get_reference_args(const struct fwnode_handle *fwnode,
if (prop->is_inline)
return -EINVAL;
if ((index + 1) * sizeof(*ref) > prop->length)
if (index >= prop->length / sizeof(*ref))
return -ENOENT;
ref_array = prop->pointer;