[Buildroot] [git commit branch/next] package/gd: fix CVE-2021-38115

[Buildroot] [git commit branch/next] package/gd: fix CVE-2021-38115

[Thomas Petazzoni]

commit: https://git.buildroot.net/buildroot/commit/?id=0eebfba38888209313837bc81a22a4b3bf11ada4
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/next

read_header_tga in gd_tga.c in the GD Graphics Library (aka LibGD)
through 2.3.2 allows remote attackers to cause a denial of service
(out-of-bounds read) via a crafted TGA file.

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
---
 ...d-out-of-bands-in-reading-tga-header-file.patch | 29 ++++++++++++++++++++++
 package/gd/gd.mk                                   |  3 +++
 2 files changed, 32 insertions(+)

diff --git a/package/gd/0001-fix-read-out-of-bands-in-reading-tga-header-file.patch b/package/gd/0001-fix-read-out-of-bands-in-reading-tga-header-file.patch
new file mode 100644
index 0000000000..a42bfb402e
--- /dev/null
+++ b/package/gd/0001-fix-read-out-of-bands-in-reading-tga-header-file.patch
@@ -0,0 +1,29 @@
+From 8b111b2b4a4842179be66db68d84dda91a246032 Mon Sep 17 00:00:00 2001
+From: maryam ebrahimzadeh <maryam.ebr@student.sharif.edu>
+Date: Mon, 19 Jul 2021 10:07:13 +0430
+Subject: [PATCH] fix read out-of-bands in reading tga header file
+
+[Retrieved from:
+https://github.com/libgd/libgd/commit/8b111b2b4a4842179be66db68d84dda91a246032]
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+---
+ src/gd_tga.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/src/gd_tga.c b/src/gd_tga.c
+index cae9428da..286febb28 100644
+--- a/src/gd_tga.c
++++ b/src/gd_tga.c
+@@ -191,7 +191,11 @@ int read_header_tga(gdIOCtx *ctx, oTga *tga)
+ 			return -1;
+ 		}
+ 
+-		gdGetBuf(tga->ident, tga->identsize, ctx);
++		
++		if (gdGetBuf(tga->ident, tga->identsize, ctx) != tga->identsize) {
++			gd_error("fail to read header ident");
++			return -1;
++		}
+ 	}
+ 
+ 	return 1;
diff --git a/package/gd/gd.mk b/package/gd/gd.mk
index 2df81e6d37..90f966c294 100644
--- a/package/gd/gd.mk
+++ b/package/gd/gd.mk
@@ -15,6 +15,9 @@ GD_CPE_ID_PRODUCT = libgd
 GD_CONF_OPTS = --without-x --disable-rpath --disable-werror
 GD_DEPENDENCIES = host-pkgconf
 
+# 0001-fix-read-out-of-bands-in-reading-tga-header-file.patch
+GD_IGNORE_CVES += CVE-2021-38115
+
 # gd forgets to link utilities with -pthread even though it uses
 # pthreads, causing linking errors with static linking
 ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),y)
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