From eee93149a49274dc3deed7d89754ee4bda240575 Mon Sep 17 00:00:00 2001 From: Jagadeesh Krishnanjanappa Date: Wed, 22 Aug 2018 17:30:30 +0530 Subject: libsndfile1: CVE-2017-14634 double64_init: Check psf->sf.channels against upper bound This prevents division by zero later in the code. While the trivial case to catch this (i.e. sf.channels < 1) has already been covered, a crafted file may report a number of channels that is so high (i.e. > INT_MAX/sizeof(double)) that it "somehow" gets miscalculated to zero (if this makes sense) in the determination of the blockwidth. Since we only support a limited number of channels anyway, make sure to check here as well. CVE-2017-14634 Closes: #318 Affects libsndfile1 = 1.0.28 Signed-off-by: Jagadeesh Krishnanjanappa Signed-off-by: Richard Purdie --- .../libsndfile/libsndfile1/CVE-2017-14634.patch | 42 ++++++++++++++++++++++ .../libsndfile/libsndfile1_1.0.28.bb | 1 + 2 files changed, 43 insertions(+) create mode 100644 meta/recipes-multimedia/libsndfile/libsndfile1/CVE-2017-14634.patch diff --git a/meta/recipes-multimedia/libsndfile/libsndfile1/CVE-2017-14634.patch b/meta/recipes-multimedia/libsndfile/libsndfile1/CVE-2017-14634.patch new file mode 100644 index 0000000000..39b4ec1101 --- /dev/null +++ b/meta/recipes-multimedia/libsndfile/libsndfile1/CVE-2017-14634.patch @@ -0,0 +1,42 @@ +From 85c877d5072866aadbe8ed0c3e0590fbb5e16788 Mon Sep 17 00:00:00 2001 +From: Fabian Greffrath +Date: Thu, 28 Sep 2017 12:15:04 +0200 +Subject: [PATCH] double64_init: Check psf->sf.channels against upper bound + +This prevents division by zero later in the code. + +While the trivial case to catch this (i.e. sf.channels < 1) has already +been covered, a crafted file may report a number of channels that is +so high (i.e. > INT_MAX/sizeof(double)) that it "somehow" gets +miscalculated to zero (if this makes sense) in the determination of the +blockwidth. Since we only support a limited number of channels anyway, +make sure to check here as well. + +CVE: CVE-2017-14634 + +Closes: https://github.com/erikd/libsndfile/issues/318 + +Upstream-Status: Backport [https://github.com/erikd/libsndfile/commit/85c877d5072866aadbe8ed0c3e0590fbb5e16788] + +Signed-off-by: Erik de Castro Lopo +Signed-off-by: Jagadeesh Krishnanjanappa +--- + src/double64.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/src/double64.c b/src/double64.c +index b318ea8..78dfef7 100644 +--- a/src/double64.c ++++ b/src/double64.c +@@ -91,7 +91,7 @@ int + double64_init (SF_PRIVATE *psf) + { static int double64_caps ; + +- if (psf->sf.channels < 1) ++ if (psf->sf.channels < 1 || psf->sf.channels > SF_MAX_CHANNELS) + { psf_log_printf (psf, "double64_init : internal error : channels = %d\n", psf->sf.channels) ; + return SFE_INTERNAL ; + } ; +-- +2.13.3 + diff --git a/meta/recipes-multimedia/libsndfile/libsndfile1_1.0.28.bb b/meta/recipes-multimedia/libsndfile/libsndfile1_1.0.28.bb index c6f2a460b2..ed43b7494e 100644 --- a/meta/recipes-multimedia/libsndfile/libsndfile1_1.0.28.bb +++ b/meta/recipes-multimedia/libsndfile/libsndfile1_1.0.28.bb @@ -11,6 +11,7 @@ SRC_URI = "http://www.mega-nerd.com/libsndfile/files/libsndfile-${PV}.tar.gz \ file://CVE-2017-8362.patch \ file://CVE-2017-8363.patch \ file://CVE-2017-14245-14246.patch \ + file://CVE-2017-14634.patch \ " SRC_URI[md5sum] = "646b5f98ce89ac60cdb060fcd398247c" -- cgit 1.2.3-korg