From 0aa81a8021dcac7ddf2be3f5dd67553ef447146a Mon Sep 17 00:00:00 2001
From: Marek Kasik <mkasik@redhat.com>
Date: Fri, 26 Jun 2026 15:02:43 +0200
Subject: [PATCH] Fix integer overflow in tilingPatternFill (CVE-2026-10118)

Resolves: RHEL-180579
---
 ...r-21.01.0-tilingPatternFill-overflow.patch | 38 +++++++++++++++++++
 poppler.spec                                  |  9 ++++-
 2 files changed, 46 insertions(+), 1 deletion(-)
 create mode 100644 poppler-21.01.0-tilingPatternFill-overflow.patch

diff --git a/poppler-21.01.0-tilingPatternFill-overflow.patch b/poppler-21.01.0-tilingPatternFill-overflow.patch
new file mode 100644
index 0000000..63ed36d
--- /dev/null
+++ b/poppler-21.01.0-tilingPatternFill-overflow.patch
@@ -0,0 +1,38 @@
+From 678bed7fc23bc14eb5f3ff4dfbaa10f2b252cf21 Mon Sep 17 00:00:00 2001
+From: Marek Kasik <mkasik@redhat.com>
+Date: Thu, 21 May 2026 17:51:51 +0200
+Subject: [PATCH] SplashOutputDev: Fix integer overflow in tilingPatternFill
+
+Use checkedMultiply() to check integer multiplication of surface size
+and number of repetitions to avoid integer overflow and possible memory issues.
+
+Fixes: #1715
+---
+ poppler/SplashOutputDev.cc | 5 ++---
+ 1 file changed, 2 insertions(+), 3 deletions(-)
+
+diff --git a/poppler/SplashOutputDev.cc b/poppler/SplashOutputDev.cc
+index 705aae25..f10d6538 100644
+--- a/poppler/SplashOutputDev.cc
++++ b/poppler/SplashOutputDev.cc
+@@ -4327,7 +4328,7 @@ bool SplashOutputDev::tilingPatternFill(GfxState *state, Gfx *gfxA, Catalog * /*
+     matc[2] = ctm[2];
+     matc[3] = ctm[3];
+ 
+-    if (surface_width == 0 || surface_height == 0 || repeatX * repeatY <= 4) {
++    if (surface_width == 0 || surface_height == 0 || repeatX * repeatY <= 4 || checkedMultiply(surface_width, repeatX, &result_width) || checkedMultiply(surface_height, repeatY, &result_height)) {
+         state->setCTM(savedCTM[0], savedCTM[1], savedCTM[2], savedCTM[3], savedCTM[4], savedCTM[5]);
+         return false;
+     }
+@@ -4349,8 +4350,6 @@ bool SplashOutputDev::tilingPatternFill(GfxState *state, Gfx *gfxA, Catalog * /*
+         kx = matc[0];
+         ky = matc[3] - (matc[1] * matc[2]) / matc[0];
+     }
+-    result_width = surface_width * repeatX;
+-    result_height = surface_height * repeatY;
+     kx = result_width / (fabs(kx) + 1);
+     ky = result_height / (fabs(ky) + 1);
+     state->concatCTM(kx, 0, 0, ky, 0, 0);
+-- 
+2.54.0
+
diff --git a/poppler.spec b/poppler.spec
index a8ea6b1..98317df 100644
--- a/poppler.spec
+++ b/poppler.spec
@@ -3,7 +3,7 @@
 Summary: PDF rendering library
 Name:    poppler
 Version: 21.01.0
-Release: 25%{?dist}
+Release: 26%{?dist}
 License: (GPLv2 or GPLv3) and GPLv2+ and LGPLv2+ and MIT
 URL:     http://poppler.freedesktop.org/
 Source0: http://poppler.freedesktop.org/poppler-%{version}.tar.xz
@@ -63,6 +63,9 @@ Patch16: poppler-21.01.0-fix-pdfsig-man-page.patch
 # https://issues.redhat.com/browse/RHEL-165202
 Patch17: poppler-21.01.0-space-after.patch
 
+# https://issues.redhat.com/browse/RHEL-180579
+Patch18: poppler-21.01.0-tilingPatternFill-overflow.patch
+
 BuildRequires: make
 BuildRequires: cmake
 BuildRequires: gcc-c++
@@ -256,6 +259,10 @@ test "$(pkg-config --modversion poppler-qt5)" = "%{version}"
 %{_mandir}/man1/*
 
 %changelog
+* Fri Jun 26 2026 Marek Kasik <mkasik@redhat.com> - 21.01.0-26
+- Fix integer overflow in tilingPatternFill (CVE-2026-10118)
+- Resolves: RHEL-180579
+
 * Mon May 11 2026 Marek Kasik <mkasik@redhat.com> - 21.01.0-25
 - Fix getText() for space after word
 - Resolves: RHEL-165202