From: Archana Polampalli <archana.polampa...@windriver.com> FFmpeg n6.1.1 has an Out-of-bounds Read via libavcodec/ppc/vp8dsp_altivec.c, static const vec_s8 h_subpel_filters_outer
Signed-off-by: Archana Polampalli <archana.polampa...@windriver.com> Signed-off-by: Steve Sakoman <st...@sakoman.com> --- .../ffmpeg/ffmpeg/CVE-2024-35367.patch | 47 +++++++++++++++++++ .../recipes-multimedia/ffmpeg/ffmpeg_6.1.1.bb | 1 + 2 files changed, 48 insertions(+) create mode 100644 meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2024-35367.patch diff --git a/meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2024-35367.patch b/meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2024-35367.patch new file mode 100644 index 0000000000..a1bec43c66 --- /dev/null +++ b/meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2024-35367.patch @@ -0,0 +1,47 @@ +From 09e6840cf7a3ee07a73c3ae88a020bf27ca1a667 Mon Sep 17 00:00:00 2001 +From: Andreas Rheinhardt <andreas.rheinha...@outlook.com> +Date: Wed, 13 Mar 2024 02:10:26 +0100 +Subject: [PATCH] avcodec/ppc/vp8dsp_altivec: Fix out-of-bounds access + +h_subpel_filters_inner[i] and h_subpel_filters_outer[i / 2] +belong together and the former allows the range 0..6, +so the latter needs to support 0..3. But it has only three +elements. Add another one. +The value for the last element has been guesstimated +from subpel_filters in libavcodec/vp8dsp.c. + +This is also intended to fix FATE-failures with UBSan here: +https://fate.ffmpeg.org/report.cgi?time=20240312011016&slot=ppc-linux-gcc-13.2-ubsan-altivec-qemu + +Tested-by: Sean McGovern <gsean...@gmail.com> +Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@outlook.com> + +CVE: CVE-2024-35367 + +Upstream-Status: Backport [https://github.com/ffmpeg/ffmpeg/commit/09e6840cf7a3ee07a73c3ae88a020bf27ca1a667] + +Signed-off-by: Archana Polampalli <archana.polampa...@windriver.com> +--- + libavcodec/ppc/vp8dsp_altivec.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +diff --git a/libavcodec/ppc/vp8dsp_altivec.c b/libavcodec/ppc/vp8dsp_altivec.c +index 12dac8b..061914f 100644 +--- a/libavcodec/ppc/vp8dsp_altivec.c ++++ b/libavcodec/ppc/vp8dsp_altivec.c +@@ -50,11 +50,12 @@ static const vec_s8 h_subpel_filters_inner[7] = + // for 6tap filters, these are the outer two taps + // The zeros mask off pixels 4-7 when filtering 0-3 + // and vice-versa +-static const vec_s8 h_subpel_filters_outer[3] = ++static const vec_s8 h_subpel_filters_outer[4] = + { + REPT4(0, 0, 2, 1), + REPT4(0, 0, 3, 3), + REPT4(0, 0, 1, 2), ++ REPT4(0, 0, 0, 0), + }; + + #define LOAD_H_SUBPEL_FILTER(i) \ +-- +2.40.0 diff --git a/meta/recipes-multimedia/ffmpeg/ffmpeg_6.1.1.bb b/meta/recipes-multimedia/ffmpeg/ffmpeg_6.1.1.bb index dd95629648..94d4cb82d5 100644 --- a/meta/recipes-multimedia/ffmpeg/ffmpeg_6.1.1.bb +++ b/meta/recipes-multimedia/ffmpeg/ffmpeg_6.1.1.bb @@ -38,6 +38,7 @@ SRC_URI = " \ file://CVE-2023-49528.patch \ file://CVE-2024-7055.patch \ file://CVE-2024-35366.patch \ + file://CVE-2024-35367.patch \ " SRC_URI[sha256sum] = "8684f4b00f94b85461884c3719382f1261f0d9eb3d59640a1f4ac0873616f968" -- 2.34.1
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