fontforge: patch CVE-2025-15270

Details: https://nvd.nist.gov/vuln/detail/CVE-2025-15270

Pick the patch that mentions this vulnerbaility explicitly
in its description.

Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>

2 files changed, 45 insertions, 0 deletions

diff --git a/meta-oe/recipes-graphics/fontforge/fontforge/CVE-2025-15270.patch b/meta-oe/recipes-graphics/fontforge/fontforge/CVE-2025-15270.patch
new file mode 100644
index 0000000000..b70a395f79
--- /dev/null
+++ b/meta-oe/recipes-graphics/fontforge/fontforge/CVE-2025-15270.patch
@@ -0,0 +1,44 @@
+From c36b95c57f85a34ad85ca2be34f62ff1100d52f1 Mon Sep 17 00:00:00 2001
+From: Ahmet Furkan Kavraz
+ <55850855+ahmetfurkankavraz@users.noreply.github.com>
+Date: Sat, 31 Jan 2026 21:23:41 +0100
+Subject: [PATCH] Fix CVE-2025-15270: Heap buffer overflow in SFD kern class
+ parsing (#5743)
+
+Fixes: CVE-2025-15270 | ZDI-25-1194 | ZDI-CAN-28563
+
+Co-authored-by: Ahmet Furkan Kavraz <kavraz@amazon.com>
+
+CVE: CVE-2025-15270
+Upstream-Status: Backport [https://github.com/fontforge/fontforge/commit/d01333a5bfa2ac4ed698c24b323d02107deacad7]
+Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
+---
+ fontforge/sfd.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/fontforge/sfd.c b/fontforge/sfd.c
+index 940627a3b..99d92b051 100644
+--- a/fontforge/sfd.c
++++ b/fontforge/sfd.c
+@@ -8276,6 +8276,10 @@ bool SFD_GetFontMetaData( FILE *sfd,
+        for ( i=classstart; i<kc->first_cnt; ++i ) {
+          if (kernclassversion < 3) {
+            getint(sfd,&temp);
++           if (temp < 0) {
++             LogError(_("Corrupted SFD file: Invalid kern class name length %d. Aborting load."), temp);
++             return false;
++           }
+            kc->firsts[i] = malloc(temp+1); kc->firsts[i][temp] = '\0';
+            nlgetc(sfd);        /* skip space */
+            fread(kc->firsts[i],1,temp,sfd);
+@@ -8293,6 +8297,10 @@ bool SFD_GetFontMetaData( FILE *sfd,
+        for ( i=1; i<kc->second_cnt; ++i ) {
+          if (kernclassversion < 3) {
+            getint(sfd,&temp);
++           if (temp < 0) {
++             LogError(_("Corrupted SFD file: Invalid kern class name length %d. Aborting load."), temp);
++             return false;
++           }
+            kc->seconds[i] = malloc(temp+1); kc->seconds[i][temp] = '\0';
+            nlgetc(sfd);        /* skip space */
+            fread(kc->seconds[i],1,temp,sfd);
diff --git a/meta-oe/recipes-graphics/fontforge/fontforge_20190801.bb b/meta-oe/recipes-graphics/fontforge/fontforge_20190801.bb
index 41d43114bf..39f434bfd4 100644
--- a/meta-oe/recipes-graphics/fontforge/fontforge_20190801.bb
+++ b/meta-oe/recipes-graphics/fontforge/fontforge_20190801.bb
@@ -21,6 +21,7 @@ SRC_URI = "git://github.com/${BPN}/${BPN}.git;branch=master;protocol=https \
            file://CVE-2020-25690-2.patch \
            file://CVE-2024-25081-25082.patch \
            file://CVE-2025-15269.patch \
+           file://CVE-2025-15270.patch \
            "
 S = "${WORKDIR}/git"