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From: Kevin Backhouse <kevinbackhouse@github.com>
Date: Wed, 3 Sep 2025 14:36:54 +0100
Subject: Check for duplicate entries
Origin: https://gitlab.freedesktop.org/poppler/poppler/-/commit/4ce27cc826bf90cc8dbbd8a8c87bd913cccd7ec0
Bug-Debian: https://bugs.debian.org/1117853
Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2025-52885
---
poppler/StructTreeRoot.cc | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/poppler/StructTreeRoot.cc b/poppler/StructTreeRoot.cc
index eb46147bd1cd..fc7bf4ceb05a 100644
--- a/poppler/StructTreeRoot.cc
+++ b/poppler/StructTreeRoot.cc
@@ -136,6 +136,10 @@ void StructTreeRoot::parseNumberTreeNode(const Dict &node)
}
int keyVal = key.getInt();
std::vector<Parent> &vec = parentTree[keyVal];
+ if (!vec.empty()) {
+ error(errSyntaxError, -1, "Nums item at position {0:d} is a duplicate entry for key {1:d}", i, keyVal);
+ continue;
+ }
Object valueArray = nums.arrayGet(i + 1);
if (valueArray.isArray()) {
--
2.51.0
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