diff options
| author |   Jagadeesh Krishnanjanappa <jkrishnanjanappa@mvista.com> | 2018-08-22 17:30:30 +0530 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2018-08-23 07:45:32 +0100 |
| commit | eee93149a49274dc3deed7d89754ee4bda240575 (patch) | |
| tree | 5bcda340da70577d75a9cf0d44afddf742817568 /meta/recipes-multimedia/libsndfile/libsndfile1 | |
| parent | ad842a3a0e6ef78fb9449362753ae3592c775192 (diff) | |
| download | openembedded-core-contrib-eee93149a49274dc3deed7d89754ee4bda240575.tar.gz | |
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 <jkrishnanjanappa@mvista.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/recipes-multimedia/libsndfile/libsndfile1')
| -rw-r--r-- | meta/recipes-multimedia/libsndfile/libsndfile1/CVE-2017-14634.patch | 42 |
1 files changed, 42 insertions, 0 deletions
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 <fabian@greffrath.com> +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 <erikd@mega-nerd.com> +Signed-off-by: Jagadeesh Krishnanjanappa <jkrishnanjanappa@mvista.com> +--- + 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 + |