ghostscript: Fix CVE-2025-27836

Upstream-Status: Backport
[https://cgit.ghostscript.com/cgi-bin/cgit.cgi/ghostpdl.git/commit/?id=8b6d19b2b4079da6863ef25f2370f25d4b054919
&
https://cgit.ghostscript.com/cgi-bin/cgit.cgi/ghostpdl.git/commit/?id=d84efb73723384a8b7fb3989c824cfa218060085]

(From OE-Core rev: 7399cf17590204f8289f356cce4575592d6e3536)

Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

3 files changed, 112 insertions, 0 deletions

diff --git a/meta/recipes-extended/ghostscript/ghostscript/CVE-2025-27836-1.patch b/meta/recipes-extended/ghostscript/ghostscript/CVE-2025-27836-1.patch
new file mode 100644
index 0000000000..bd32456b99
--- /dev/null
+++ b/meta/recipes-extended/ghostscript/ghostscript/CVE-2025-27836-1.patch
@@ -0,0 +1,64 @@
+From 8b6d19b2b4079da6863ef25f2370f25d4b054919 Mon Sep 17 00:00:00 2001
+From: Zdenek Hutyra <zhutyra@centrum.cz>
+Date: Mon, 13 Jan 2025 09:07:57 +0000
+Subject: Bug 708192: Fix potential print buffer overflow
+
+CVE-2025-27836
+
+Upstream-Status: Backport [https://cgit.ghostscript.com/cgi-bin/cgit.cgi/ghostpdl.git/commit/?id=8b6d19b2b4079da6863ef25f2370f25d4b054919]
+CVE: CVE-2025-27836
+Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
+---
+ contrib/japanese/gdev10v.c | 22 ++++++++++++++++------
+ 1 file changed, 16 insertions(+), 6 deletions(-)
+
+diff --git a/contrib/japanese/gdev10v.c b/contrib/japanese/gdev10v.c
+index 0bd3cec02..9d27573dc 100644
+--- a/contrib/japanese/gdev10v.c
++++ b/contrib/japanese/gdev10v.c
+@@ -199,17 +199,25 @@ bj10v_print_page(gx_device_printer *pdev, gp_file *prn_stream)
+         int bytes_per_column = bits_per_column / 8;
+         int x_skip_unit = bytes_per_column * (xres / 180);
+         int y_skip_unit = (yres / 180);
+-        byte *in = (byte *)gs_malloc(pdev->memory->non_gc_memory, 8, line_size, "bj10v_print_page(in)");
+-        /* We need one extra byte in <out> for our sentinel. */
+-        byte *out = (byte *)gs_malloc(pdev->memory->non_gc_memory, bits_per_column * line_size + 1, 1, "bj10v_print_page(out)");
++        byte *in, *out;
+         int lnum = 0;
+         int y_skip = 0;
+         int code = 0;
+         int blank_lines = 0;
+         int bytes_per_data = ((xres == 360) && (yres == 360)) ? 1 : 3;
+ 
+-        if ( in == 0 || out == 0 )
+-                return -1;
++        if (bits_per_column == 0 || line_size > (max_int - 1) / bits_per_column) {
++            code = gs_note_error(gs_error_rangecheck);
++            goto error;
++        }
++
++        in = (byte *)gs_malloc(pdev->memory->non_gc_memory, 8, line_size, "bj10v_print_page(in)");
++        /* We need one extra byte in <out> for our sentinel. */
++        out = (byte *)gs_malloc(pdev->memory->non_gc_memory, bits_per_column * line_size + 1, 1, "bj10v_print_page(out)");
++        if ( in == NULL || out == NULL ) {
++            code = gs_note_error(gs_error_VMerror);
++            goto error;
++        }
+ 
+         /* Initialize the printer. */
+         prn_puts(pdev, "\033@");
+@@ -320,8 +328,10 @@ notz:
+            }
+ 
+         /* Eject the page */
+-xit:   prn_putc(pdev, 014);    /* form feed */
++xit:
++        prn_putc(pdev, 014); /* form feed */
+         prn_flush(pdev);
++error:
+         gs_free(pdev->memory->non_gc_memory, (char *)out, bits_per_column, line_size, "bj10v_print_page(out)");
+         gs_free(pdev->memory->non_gc_memory, (char *)in, 8, line_size, "bj10v_print_page(in)");
+         return code;
+-- 
+cgit v1.2.3
+
diff --git a/meta/recipes-extended/ghostscript/ghostscript/CVE-2025-27836-2.patch b/meta/recipes-extended/ghostscript/ghostscript/CVE-2025-27836-2.patch
new file mode 100644
index 0000000000..2e3817bdae
--- /dev/null
+++ b/meta/recipes-extended/ghostscript/ghostscript/CVE-2025-27836-2.patch
@@ -0,0 +1,46 @@
+From d84efb73723384a8b7fb3989c824cfa218060085 Mon Sep 17 00:00:00 2001
+From: Ken Sharp <Ken.Sharp@artifex.com>
+Date: Thu, 13 Mar 2025 11:01:16 +0000
+Subject: Fix Coverity IDs 457699 and 457700
+
+Not sure if Coverity has been updated, this is ancient contrib code
+which has not changed for a long time.
+
+However, fix the warning by initialising the pointers to NULL, and then
+avoid trying to free them if they are NULL.
+
+Upstream-Status: Backport [https://cgit.ghostscript.com/cgi-bin/cgit.cgi/ghostpdl.git/commit/?id=d84efb73723384a8b7fb3989c824cfa218060085]
+CVE: CVE-2025-27836
+Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
+---
+ contrib/japanese/gdev10v.c | 8 +++++---
+ 1 file changed, 5 insertions(+), 3 deletions(-)
+
+diff --git a/contrib/japanese/gdev10v.c b/contrib/japanese/gdev10v.c
+index 9d27573dc..4d47200e5 100644
+--- a/contrib/japanese/gdev10v.c
++++ b/contrib/japanese/gdev10v.c
+@@ -199,7 +199,7 @@ bj10v_print_page(gx_device_printer *pdev, gp_file *prn_stream)
+         int bytes_per_column = bits_per_column / 8;
+         int x_skip_unit = bytes_per_column * (xres / 180);
+         int y_skip_unit = (yres / 180);
+-        byte *in, *out;
++        byte *in = NULL, *out = NULL;
+         int lnum = 0;
+         int y_skip = 0;
+         int code = 0;
+@@ -332,7 +332,9 @@ xit:
+         prn_putc(pdev, 014); /* form feed */
+         prn_flush(pdev);
+ error:
+-        gs_free(pdev->memory->non_gc_memory, (char *)out, bits_per_column, line_size, "bj10v_print_page(out)");
+-        gs_free(pdev->memory->non_gc_memory, (char *)in, 8, line_size, "bj10v_print_page(in)");
++        if (out != NULL)
++            gs_free(pdev->memory->non_gc_memory, (char *)out, bits_per_column, line_size, "bj10v_print_page(out)");
++        if (in != NULL)
++            gs_free(pdev->memory->non_gc_memory, (char *)in, 8, line_size, "bj10v_print_page(in)");
+         return code;
+ }
+-- 
+cgit v1.2.3
+
diff --git a/meta/recipes-extended/ghostscript/ghostscript_9.55.0.bb b/meta/recipes-extended/ghostscript/ghostscript_9.55.0.bb
index abc0238ddc..8499bb3676 100644
--- a/meta/recipes-extended/ghostscript/ghostscript_9.55.0.bb
+++ b/meta/recipes-extended/ghostscript/ghostscript_9.55.0.bb
@@ -68,6 +68,8 @@ SRC_URI_BASE = "https://github.com/ArtifexSoftware/ghostpdl-downloads/releases/d
                 file://CVE-2025-27832.patch \
                 file://CVE-2025-27834.patch \
                 file://CVE-2025-27835.patch \
+                file://CVE-2025-27836-1.patch \
+                file://CVE-2025-27836-2.patch \
 "
 
 SRC_URI = "${SRC_URI_BASE} \