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[AutoPR- Security] Patch freetype for CVE-2026-23865 [MEDIUM] #204

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[AutoPR- Security] Patch freetype for CVE-2026-23865 [MEDIUM] #204

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53 changes: 53 additions & 0 deletions SPECS/freetype/CVE-2026-23865.patch
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Original file line number Diff line number Diff line change
@@ -0,0 +1,53 @@
From 95b7cce818383e36883633aebd4b908092cb34a2 Mon Sep 17 00:00:00 2001
From: Werner Lemberg <wl@gnu.org>
Date: Sat, 3 Jan 2026 08:07:57 +0100
Subject: [PATCH] Check for overflow in array size computation.

Problem reported and analyzed by povcfe <povcfe2sec@gmail.com>.

Fixes issue #1382.

* src/truetype/ttgxvar.c (tt_var_load_item_variation_store): Do it.

Signed-off-by: Azure Linux Security Servicing Account <azurelinux-security@microsoft.com>
Upstream-reference: https://gitlab.com/freetype/freetype/-/commit/fc85a255849229c024c8e65f536fe1875d84841c.patch
---
src/truetype/ttgxvar.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/truetype/ttgxvar.c b/src/truetype/ttgxvar.c
index ad4f266..7fa8256 100644
--- a/src/truetype/ttgxvar.c
+++ b/src/truetype/ttgxvar.c
@@ -625,6 +625,7 @@
FT_UShort word_delta_count;
FT_UInt region_idx_count;
FT_UInt per_region_size;
+ FT_UInt delta_set_size;


if ( FT_STREAM_SEEK( offset + dataOffsetArray[i] ) )
@@ -682,7 +683,19 @@
if ( long_words )
per_region_size *= 2;

- if ( FT_NEW_ARRAY( varData->deltaSet, per_region_size * item_count ) )
+ /* Check for overflow (we actually test whether the */
+ /* multiplication of two unsigned values wraps around). */
+ delta_set_size = per_region_size * item_count;
+ if ( per_region_size &&
+ delta_set_size / per_region_size != item_count )
+ {
+ FT_TRACE2(( "tt_var_load_item_variation_store:"
+ " bad delta set array size\n" ));
+ error = FT_THROW( Array_Too_Large );
+ goto Exit;
+ }
+
+ if ( FT_NEW_ARRAY( varData->deltaSet, delta_set_size ) )
goto Exit;
if ( FT_Stream_Read( stream,
varData->deltaSet,
--
2.45.4

6 changes: 5 additions & 1 deletion SPECS/freetype/freetype.spec
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Original file line number Diff line number Diff line change
@@ -1,14 +1,15 @@
Summary: software font engine.
Name: freetype
Version: 2.13.2
Release: 1%{?dist}
Release: 2%{?dist}
License: BSD/GPLv2
Vendor: Microsoft Corporation
Distribution: Azure Linux
Group: System Environment/Libraries
URL: https://www.freetype.org/
Source0: https://download.savannah.gnu.org/releases/freetype/freetype-%{version}.tar.gz
Source1: https://download.savannah.gnu.org/releases/freetype/freetype-doc-%{version}.tar.gz
Patch0: CVE-2026-23865.patch
BuildRequires: brotli-devel
BuildRequires: bzip2-devel
BuildRequires: gcc
Expand Down Expand Up @@ -80,6 +81,9 @@ make -k check |& tee %{_specdir}/%{name}-check-log || %{nocheck}
%{_bindir}/freetype-config

%changelog
* Tue Mar 03 2026 Azure Linux Security Servicing Account <azurelinux-security@microsoft.com> - 2.13.2-2
- Patch for CVE-2026-23865

* Thu Nov 02 2023 CBL-Mariner Servicing Account <cblmargh@microsoft.com> - 2.13.2-1
- Auto-upgrade to 2.13.2 - Azure Linux 3.0 - package upgrades

Expand Down
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