1 files changed, 42 insertions, 0 deletions

diff --git a/meta/recipes-core/libxml/libxml2/CVE-2023-29469.patch b/meta/recipes-core/libxml/libxml2/CVE-2023-29469.patch
new file mode 100644
index 0000000000..1252668577
--- /dev/null
+++ b/meta/recipes-core/libxml/libxml2/CVE-2023-29469.patch
@@ -0,0 +1,42 @@
+From 547edbf1cbdccd46b2e8ff322a456eaa5931c5df Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Fri, 7 Apr 2023 11:49:27 +0200
+Subject: [PATCH] [CVE-2023-29469] Hashing of empty dict strings isn't
+ deterministic
+
+When hashing empty strings which aren't null-terminated,
+xmlDictComputeFastKey could produce inconsistent results. This could
+lead to various logic or memory errors, including double frees.
+
+For consistency the seed is also taken into account, but this shouldn't
+have an impact on security.
+
+Found by OSS-Fuzz.
+
+Fixes #510.
+
+CVE: CVE-2023-29469
+Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/libxml2/-/commit/547edbf1cbdccd46b2e8ff322a456eaa5931c5df]
+
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ dict.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/dict.c b/dict.c
+index 86c3f6d7..d7fd1a06 100644
+--- a/dict.c
++++ b/dict.c
+@@ -451,7 +451,8 @@ static unsigned long
+ xmlDictComputeFastKey(const xmlChar *name, int namelen, int seed) {
+     unsigned long value = seed;
+ 
+-    if (name == NULL) return(0);
++    if ((name == NULL) || (namelen <= 0))
++        return(value);
+     value = *name;
+     value <<= 5;
+     if (namelen > 10) {
+-- 
+GitLab
+