From: Zhang Peng <[email protected]>

CVE-2025-31177:
gnuplot is affected by a heap buffer overflow at function utf8_copy_one.

Reference:
[https://nvd.nist.gov/vuln/detail/CVE-2025-31177]

Upstream patches:
[https://sourceforge.net/p/gnuplot/gnuplot-main/ci/226809aebb345e74d371bb43a2b434b490be527a/]

Signed-off-by: Zhang Peng <[email protected]>
---
 .../gnuplot/gnuplot/CVE-2025-31177.patch      | 40 +++++++++++++++++++
 .../recipes-extended/gnuplot/gnuplot_5.4.3.bb |  1 +
 2 files changed, 41 insertions(+)
 create mode 100644 
meta-oe/recipes-extended/gnuplot/gnuplot/CVE-2025-31177.patch

diff --git a/meta-oe/recipes-extended/gnuplot/gnuplot/CVE-2025-31177.patch 
b/meta-oe/recipes-extended/gnuplot/gnuplot/CVE-2025-31177.patch
new file mode 100644
index 0000000000..dcacf538b2
--- /dev/null
+++ b/meta-oe/recipes-extended/gnuplot/gnuplot/CVE-2025-31177.patch
@@ -0,0 +1,40 @@
+From 36a4355010a81a78cf9df03d3c76dcd599ed994b Mon Sep 17 00:00:00 2001
+From: Ethan A Merritt <[email protected]>
+Date: Wed, 15 Jan 2025 11:56:13 -0800
+Subject: [PATCH] dumb:  more stringent tests against y bound of dumb terminal
+ charcell array
+
+Bug 2756
+
+CVE: CVE-2025-31177
+Upstream-Status: Backport 
[https://sourceforge.net/p/gnuplot/gnuplot-main/ci/226809aebb345e74d371bb43a2b434b490be527a/]
+Signed-off-by: Zhang Peng <[email protected]>
+---
+ term/dumb.trm | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/term/dumb.trm b/term/dumb.trm
+index c93afb94e..bb22ca25f 100644
+--- a/term/dumb.trm
++++ b/term/dumb.trm
+@@ -637,7 +637,7 @@ DUMB_put_text(unsigned int x, unsigned int y, const char 
*str)
+ {
+     int i, length;
+ 
+-    if (y > dumb_ymax)
++    if (y < 0 || y > dumb_ymax)
+       return;
+ 
+     length = gp_strlen(str);
+@@ -784,7 +784,7 @@ ENHdumb_FLUSH()
+       y += i;
+ 
+       /* print the string fragment, perhaps invisibly */
+-      if (ENHdumb_show && y < dumb_ymax) {
++      if (ENHdumb_show && (0 <= y && y < dumb_ymax)) {
+ #ifdef DUMB_UTF8
+           for (i = 0; i < len && x < dumb_xmax; i++, x++) {
+               utf8_copy_one( (char *)(&DUMB_PIXEL(x, y)), gp_strchrn(str,i));
+-- 
+2.43.0
+
diff --git a/meta-oe/recipes-extended/gnuplot/gnuplot_5.4.3.bb 
b/meta-oe/recipes-extended/gnuplot/gnuplot_5.4.3.bb
index 18722b3641..18f98aa503 100644
--- a/meta-oe/recipes-extended/gnuplot/gnuplot_5.4.3.bb
+++ b/meta-oe/recipes-extended/gnuplot/gnuplot_5.4.3.bb
@@ -17,6 +17,7 @@ SRC_URI = 
"${SOURCEFORGE_MIRROR}/project/${BPN}/${BPN}/${PV}/${BP}.tar.gz;name=a
            file://gnuplot.png \
            file://CVE-2025-3359.patch \
            file://CVE-2025-31176.patch \
+           file://CVE-2025-31177.patch \
            "
 SRC_URI:append:class-target = " \
     file://0002-do-not-build-demos.patch \
-- 
2.50.0

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