1 files changed, 53 insertions, 0 deletions

diff --git a/meta/recipes-core/libxml/libxml2/CVE-2022-29824-dependent.patch b/meta/recipes-core/libxml/libxml2/CVE-2022-29824-dependent.patch
new file mode 100644
index 0000000000..63d613cc21
--- /dev/null
+++ b/meta/recipes-core/libxml/libxml2/CVE-2022-29824-dependent.patch
@@ -0,0 +1,53 @@
+From b07251215ef48c70c6e56f7351406c47cfca4d5b Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Fri, 10 Jan 2020 15:55:07 +0100
+Subject: [PATCH] Fix integer overflow in xmlBufferResize
+
+Found by OSS-Fuzz.
+
+CVE: CVE-2022-29824
+
+Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/libxml2/-/commit/b07251215ef48c70c6e56f7351406c47cfca4d5b]
+
+Signed-off-by: Riyaz Ahmed Khan <Riyaz.Khan@kpit.com>
+
+---
+ tree.c | 9 +++++++--
+ 1 file changed, 7 insertions(+), 2 deletions(-)
+
+diff --git a/tree.c b/tree.c
+index 0d7fc98c..f43f6de1 100644
+--- a/tree.c
++++ b/tree.c
+@@ -7424,12 +7424,17 @@ xmlBufferResize(xmlBufferPtr buf, unsigned int size)
+     if (size < buf->size)
+         return 1;
+ 
++    if (size > UINT_MAX - 10) {
++        xmlTreeErrMemory("growing buffer");
++        return 0;
++    }
++
+     /* figure out new size */
+     switch (buf->alloc){
+        case XML_BUFFER_ALLOC_IO:
+        case XML_BUFFER_ALLOC_DOUBLEIT:
+            /*take care of empty case*/
+-           newSize = (buf->size ? buf->size*2 : size + 10);
++           newSize = (buf->size ? buf->size : size + 10);
+            while (size > newSize) {
+                if (newSize > UINT_MAX / 2) {
+                    xmlTreeErrMemory("growing buffer");
+@@ -7445,7 +7450,7 @@ xmlBufferResize(xmlBufferPtr buf, unsigned int size)
+             if (buf->use < BASE_BUFFER_SIZE)
+                 newSize = size;
+             else {
+-                newSize = buf->size * 2;
++                newSize = buf->size;
+                 while (size > newSize) {
+                     if (newSize > UINT_MAX / 2) {
+                         xmlTreeErrMemory("growing buffer");
+-- 
+GitLab
+
+