ghostscript: fix CVE-2024-29510

(From OE-Core rev: 18e03cadcad0b416ef9fe65627e2e5c2924e3f26)

Signed-off-by: Archana Polampalli <archana.polampalli@windriver.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

2 files changed, 85 insertions, 0 deletions

diff --git a/meta/recipes-extended/ghostscript/ghostscript/CVE-2024-29510.patch b/meta/recipes-extended/ghostscript/ghostscript/CVE-2024-29510.patch
new file mode 100644
index 0000000000..0234c79c7d
--- /dev/null
+++ b/meta/recipes-extended/ghostscript/ghostscript/CVE-2024-29510.patch
@@ -0,0 +1,84 @@
+From 3b1735085ecef20b29e8db3416ab36de93e86d1f Mon Sep 17 00:00:00 2001
+From: Ken Sharp <Ken.Sharp@artifex.com>
+Date: Thu, 21 Mar 2024 09:01:15 +0000
+Subject: [PATCH 4/5] Uniprint device - prevent string configuration changes
+ when SAFER
+
+Bug #707662
+
+We cannot sanitise the string arguments used by the Uniprint device
+because they can potentially include anything.
+
+This commit ensures that these strings are locked and cannot be
+changed by PostScript once SAFER is activated. Full configuration from
+the command line is still possible (see the *.upp files in lib).
+
+This addresses CVE-2024-29510
+
+CVE: CVE-2024-29510
+
+Upstream-Status: Backport [https://cgit.ghostscript.com/cgi-bin/cgit.cgi/ghostpdl.git/commit/?id=3b1735085ecef20b29e]
+
+Signed-off-by: Archana Polampalli <archana.polampalli@windriver.com>
+---
+ devices/gdevupd.c | 31 +++++++++++++++++++++++++++++++
+ 1 file changed, 31 insertions(+)
+
+diff --git a/devices/gdevupd.c b/devices/gdevupd.c
+index 6635984..7952165 100644
+--- a/devices/gdevupd.c
++++ b/devices/gdevupd.c
+@@ -1886,6 +1886,16 @@ out on this copies.
+       if(!upd_strings[i]) continue;
+       UPD_PARAM_READ(param_read_string,upd_strings[i],value,udev->memory);
+       if(0 == code) {
++        if (gs_is_path_control_active(udev->memory)) {
++            if (strings[i].size != value.size)
++              error = gs_error_invalidaccess;
++            else {
++                if (strings[i].data && memcmp(strings[i].data, value.data, strings[i].size) != 0)
++                    error = gs_error_invalidaccess;
++            }
++            if (error < 0)
++                goto exit;
++        }
+          if(0 <= error) error |= UPD_PUT_STRINGS;
+          UPD_MM_DEL_PARAM(udev->memory, strings[i]);
+          if(!value.size) {
+@@ -1903,6 +1913,26 @@ out on this copies.
+       if(!upd_string_a[i]) continue;
+       UPD_PARAM_READ(param_read_string_array,upd_string_a[i],value,udev->memory);
+       if(0 == code) {
++          if (gs_is_path_control_active(udev->memory)) {
++              if (string_a[i].size != value.size)
++                  error = gs_error_invalidaccess;
++              else {
++                  int loop;
++                  for (loop = 0;loop < string_a[i].size;loop++) {
++                      gs_param_string *tmp1 = (gs_param_string *)&(string_a[i].data[loop]);
++                      gs_param_string *tmp2 = (gs_param_string *)&value.data[loop];
++
++                      if (tmp1->size != tmp2->size)
++                          error = gs_error_invalidaccess;
++                      else {
++                          if (tmp1->data && memcmp(tmp1->data, tmp2->data, tmp1->size) != 0)
++                              error = gs_error_invalidaccess;
++                      }
++                  }
++              }
++            if (error < 0)
++                goto exit;
++          }
+          if(0 <= error) error |= UPD_PUT_STRING_A;
+          UPD_MM_DEL_APARAM(udev->memory, string_a[i]);
+          if(!value.size) {
+@@ -2097,6 +2127,7 @@ transferred into the device-structure. In the case of "uniprint", this may
+       if(0 > code) error = code;
+    }
+
++exit:
+    if(0 < error) { /* Actually something loaded without error */
+
+       if(!(upd = udev->upd)) {
+--
+2.40.0
diff --git a/meta/recipes-extended/ghostscript/ghostscript_9.55.0.bb b/meta/recipes-extended/ghostscript/ghostscript_9.55.0.bb
index 36c5aa3285..1fd08d1cfe 100644
--- a/meta/recipes-extended/ghostscript/ghostscript_9.55.0.bb
+++ b/meta/recipes-extended/ghostscript/ghostscript_9.55.0.bb
@@ -48,6 +48,7 @@ SRC_URI_BASE = "https://github.com/ArtifexSoftware/ghostpdl-downloads/releases/d
                 file://CVE-2024-33869-0002.patch \
                 file://CVE-2024-33871-0001.patch \
                 file://CVE-2024-33871-0002.patch \
+                file://CVE-2024-29510.patch \
 "
 
 SRC_URI = "${SRC_URI_BASE} \