From: Yue Tao <[email protected]> The av_probe_input_buffer function in libavformat/utils.c in FFmpeg before 1.0.2, when running with certain -probesize values, allows remote attackers to cause a denial of service (crash) via a crafted MP3 file, possibly related to frame size or lack of sufficient frames to estimate rate.
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2012-6618 Signed-off-by: Yue Tao <[email protected]> Signed-off-by: Roy Li <[email protected]> --- ...f-compute-probe-buffer-size-more-reliably.patch | 45 ++++++++++++++++++++ .../gstreamer/gst-ffmpeg_0.10.13.bb | 1 + 2 files changed, 46 insertions(+) create mode 100644 meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-lavf-compute-probe-buffer-size-more-reliably.patch diff --git a/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-lavf-compute-probe-buffer-size-more-reliably.patch b/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-lavf-compute-probe-buffer-size-more-reliably.patch new file mode 100644 index 0000000..ea4aa22 --- /dev/null +++ b/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-lavf-compute-probe-buffer-size-more-reliably.patch @@ -0,0 +1,45 @@ +gst-ffmpeg: lavf: compute probe buffer size more reliably. + +The previous code computes the offset by reversing the growth +of the allocated buffer size: it is complex and did lead to +inconsistencies when the size limit is reached. + +Fix trac ticket #1991. +(cherry picked from commit 03847eb8259291b4ff1bd840bd779d0699d71f96) + +Conflicts: + libavformat/utils.c + +Upstream-Status: Backport + +Signed-off-by: Yue Tao <[email protected]> + +--- + libavformat/utils.c | 4 ++-- + 1 files changed, 2 insertions(+), 2 deletions(-) + +diff --git a/libavformat/utils.c b/libavformat/utils.c +index 7940037..be73c4a 100644 +--- a/gst-libs/ext/libav/libavformat/utils.c ++++ b/gst-libs/ext/libav/libavformat/utils.c +@@ -459,7 +459,7 @@ int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt, + { + AVProbeData pd = { filename ? filename : "", NULL, -offset }; + unsigned char *buf = NULL; +- int ret = 0, probe_size; ++ int ret = 0, probe_size, buf_offset = 0; + + if (!max_probe_size) { + max_probe_size = PROBE_BUF_MAX; +@@ -499,7 +499,7 @@ int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt, + score = 0; + ret = 0; /* error was end of file, nothing read */ + } +- pd.buf_size += ret; ++ pd.buf_size = buf_offset += ret; + pd.buf = &buf[offset]; + + memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE); +-- +1.7.5.4 + diff --git a/meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb b/meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb index 7806006..10bf36c 100644 --- a/meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb +++ b/meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb @@ -51,6 +51,7 @@ SRC_URI = "http://gstreamer.freedesktop.org/src/${BPN}/${BPN}-${PV}.tar.bz2 \ file://0001-avcodec-dsputil-fix-signedness-in-sizeof-comparissio.patch \ file://0001-error-concealment-initialize-block-index.patch \ file://0001-qdm2-check-array-index-before-use-fix-out-of-array-a.patch \ + file://0001-lavf-compute-probe-buffer-size-more-reliably.patch \ " SRC_URI[md5sum] = "7f5beacaf1312db2db30a026b36888c4" -- 1.7.10.4 -- _______________________________________________ Openembedded-core mailing list [email protected] http://lists.openembedded.org/mailman/listinfo/openembedded-core
