36 lines
1.0 KiB
Diff
36 lines
1.0 KiB
Diff
From 289f5c18b195aa43d46a619d1188709abbfa9c82 Mon Sep 17 00:00:00 2001
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From: 10054172 <hui.zhang@thalesgroup.com>
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Date: Fri, 18 Mar 2022 12:42:57 -0400
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Subject: [PATCH 1/2] Fix issue #499: unsigned integer overflow
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Signed-off-by: 10054172 <hui.zhang@thalesgroup.com>
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---
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protobuf-c/protobuf-c.c | 11 +++++++----
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1 file changed, 7 insertions(+), 4 deletions(-)
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diff --git a/protobuf-c/protobuf-c.c b/protobuf-c/protobuf-c.c
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index 98052cd..ec2d40a 100644
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--- a/protobuf-c/protobuf-c.c
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+++ b/protobuf-c/protobuf-c.c
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@@ -2603,10 +2603,13 @@ parse_required_member(ScannedMember *scanned_member,
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return FALSE;
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def_mess = scanned_member->field->default_value;
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- subm = protobuf_c_message_unpack(scanned_member->field->descriptor,
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- allocator,
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- len - pref_len,
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- data + pref_len);
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+ if (len > pref_len)
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+ subm = protobuf_c_message_unpack(scanned_member->field->descriptor,
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+ allocator,
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+ len - pref_len,
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+ data + pref_len);
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+ else
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+ subm = NULL;
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if (maybe_clear &&
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*pmessage != NULL &&
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--
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2.37.3.windows.1
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