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python3-ujson: Fix CVE-2026-32874

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This patch applies the upstream fix referenced in [2], using the
commit shown in [1].

[1] https://github.com/ultrajson/ultrajson/commit/4baeb950df780092bd3c89fc702a868e99a3a1d2
[2] https://nvd.nist.gov/vuln/detail/CVE-2026-32874

Signed-off-by: Hetvi Thakar <hthakar@cisco.com>
Signed-off-by: Anuj Mittal <anuj.mittal@oss.qualcomm.com>
This commit is contained in:
Hetvi Thakar
2026-09-01 06:57:21 +05:30
committed by Anuj Mittal
parent 28aefe0fdb
commit f6aab7432b
2 changed files with 62 additions and 0 deletions
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meta-python/recipes-devtools/python/python3-ujson/CVE-2026-32874.patch
+61
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@@ -0,0 +1,61 @@
From cf988dbccb1b71cc1cb27c59ac73e09f3a68c3c1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Br=C3=A9nainn=20Woodsend?= <bwoodsend@gmail.com>
Date: Wed, 10 Dec 2025 22:37:20 +0000
Subject: [PATCH] Fix memory leak parsing large integers
CVE: CVE-2026-32874
Upstream-Status: Backport [https://github.com/ultrajson/ultrajson/commit/4baeb950df780092bd3c89fc702a868e99a3a1d2]
Backport Changes:
- Adjusted source paths for ujson 5.9.0's pre-src-layout tree.
(cherry picked from commit 4baeb950df780092bd3c89fc702a868e99a3a1d2)
Signed-off-by: Hetvi Thakar <hthakar@cisco.com>
---
python/JSONtoObj.c | 4 +++-
tests/test_ujson.py | 14 ++++++++++++++
2 files changed, 17 insertions(+), 1 deletion(-)
diff --git a/python/JSONtoObj.c b/python/JSONtoObj.c
index 208055c..93e87f3 100644
--- a/python/JSONtoObj.c
+++ b/python/JSONtoObj.c
@@ -136,7 +136,9 @@ static JSOBJ Object_newIntegerFromString(void *prv, char *value, size_t length)
char *buf = PyObject_Malloc(length + 1);
memcpy(buf, value, length);
buf[length] = '\0';
- return PyLong_FromString(buf, NULL, 10);
+ PyObject *ret = PyLong_FromString(buf, NULL, 10);
+ PyObject_Free(buf);
+ return ret;
}
static JSOBJ Object_newDouble(void *prv, double value)
diff --git a/tests/test_ujson.py b/tests/test_ujson.py
index d24edb0..9ba6f55 100644
--- a/tests/test_ujson.py
+++ b/tests/test_ujson.py
@@ -653,6 +653,20 @@ def test_encode_decode_big_int(i, mode):
assert ujson.decode(json_string) == python_object
+@pytest.mark.xfail(
+ sys.implementation.name == "pypy",
+ reason="PyPy's PyNumber_ToBase ignores sys.get_int_max_str_digits()",
+)
+def test_encode_too_big_int_error():
+ with pytest.raises(ValueError, match="integer string conversion"):
+ ujson.dumps(pow(10, 10_000))
+
+
+def test_decode_too_big_int_error():
+ with pytest.raises(ValueError, match="integer string conversion"):
+ ujson.loads("9" * 10_000)
+
+
@pytest.mark.parametrize(
"test_input, expected",
[
--
2.35.6