1 files changed, 40 insertions, 0 deletions

diff --git a/meta/recipes-extended/cups/cups/CVE-2023-4504.patch b/meta/recipes-extended/cups/cups/CVE-2023-4504.patch
new file mode 100644
index 0000000000..be0db1fbd4
--- /dev/null
+++ b/meta/recipes-extended/cups/cups/CVE-2023-4504.patch
@@ -0,0 +1,40 @@
+From a9a7daa77699bd58001c25df8a61a8029a217ddf Mon Sep 17 00:00:00 2001
+From: Zdenek Dohnal <zdohnal@redhat.com>
+Date: Fri, 1 Sep 2023 16:47:29 +0200
+Subject: [PATCH] raster-interpret.c: Fix CVE-2023-4504
+
+We didn't check for end of buffer if it looks there is an escaped
+character - check for NULL terminator there and if found, return NULL
+as return value and in `ptr`, because a lone backslash is not
+a valid PostScript character.
+
+Upstream-Status: Backport [https://github.com/OpenPrinting/cups/commit/2431caddb7e6a87f04ac90b5c6366ad268b6ff31]
+CVE: CVE-2023-4504
+Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
+---
+ cups/raster-interpret.c | 14 +++++++++++++-
+ 1 file changed, 13 insertions(+), 1 deletion(-)
+
+--- a/cups/raster-interpret.c
++++ b/cups/raster-interpret.c
+@@ -1113,7 +1113,19 @@ scan_ps(_cups_ps_stack_t *st,            /* I  - S
+ 
+            cur ++;
+ 
+-            if (*cur == 'b')
++          /*
++           * Return NULL if we reached NULL terminator, a lone backslash
++            * is not a valid character in PostScript.
++           */
++
++           if (!*cur)
++           {
++             *ptr = NULL;
++
++             return (NULL);
++           }
++
++           if (*cur == 'b')
+              *valptr++ = '\b';
+            else if (*cur == 'f')
+              *valptr++ = '\f';