From fe9cdf74f7ef3637ed7c600182f8a0ba40510d2a Mon Sep 17 00:00:00 2001 From: Kiran Surendran Date: Mon, 18 Oct 2021 10:20:18 -0700 Subject: ffmpeg: fix CVE-2021-38114 backport from upstream Signed-off-by: Kiran Surendran Signed-off-by: Alexandre Belloni Signed-off-by: Richard Purdie --- .../ffmpeg/ffmpeg/fix-CVE-2021-38114.patch | 67 ++++++++++++++++++++++ meta/recipes-multimedia/ffmpeg/ffmpeg_4.4.bb | 3 +- 2 files changed, 69 insertions(+), 1 deletion(-) create mode 100644 meta/recipes-multimedia/ffmpeg/ffmpeg/fix-CVE-2021-38114.patch diff --git a/meta/recipes-multimedia/ffmpeg/ffmpeg/fix-CVE-2021-38114.patch b/meta/recipes-multimedia/ffmpeg/ffmpeg/fix-CVE-2021-38114.patch new file mode 100644 index 0000000000..ab3ecfecbb --- /dev/null +++ b/meta/recipes-multimedia/ffmpeg/ffmpeg/fix-CVE-2021-38114.patch @@ -0,0 +1,67 @@ +CVE: CVE-2021-38114 +Upstream-Status: Backport +Signed-off-by: Kiran Surendran + +From 463dbe4e78cc560ca5b09f23a07add0eb78ccee8 Mon Sep 17 00:00:00 2001 +From: maryam ebr +Date: Tue, 3 Aug 2021 01:05:47 -0400 +Subject: [PATCH] avcodec/dnxhddec: check and propagate function return value + +Similar to CVE-2013-0868, here return value check for 'init_vlc' is needed. +crafted DNxHD data can cause unspecified impact. + +Reviewed-by: Paul B Mahol +Signed-off-by: James Almer +--- + libavcodec/dnxhddec.c | 22 +++++++++++++++------- + 1 file changed, 15 insertions(+), 7 deletions(-) + +diff --git a/libavcodec/dnxhddec.c b/libavcodec/dnxhddec.c +index c78d55aee5..9b475a6979 100644 +--- a/libavcodec/dnxhddec.c ++++ b/libavcodec/dnxhddec.c +@@ -112,6 +112,7 @@ static av_cold int dnxhd_decode_init(AVCodecContext *avctx) + + static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth) + { ++ int ret; + if (cid != ctx->cid) { + const CIDEntry *cid_table = ff_dnxhd_get_cid_table(cid); + +@@ -132,19 +133,26 @@ static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth) + ff_free_vlc(&ctx->dc_vlc); + ff_free_vlc(&ctx->run_vlc); + +- init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257, ++ if ((ret = init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257, + ctx->cid_table->ac_bits, 1, 1, +- ctx->cid_table->ac_codes, 2, 2, 0); +- init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth > 8 ? 14 : 12, ++ ctx->cid_table->ac_codes, 2, 2, 0)) < 0) ++ goto out; ++ if ((ret = init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth > 8 ? 14 : 12, + ctx->cid_table->dc_bits, 1, 1, +- ctx->cid_table->dc_codes, 1, 1, 0); +- init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62, ++ ctx->cid_table->dc_codes, 1, 1, 0)) < 0) ++ goto out; ++ if ((ret = init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62, + ctx->cid_table->run_bits, 1, 1, +- ctx->cid_table->run_codes, 2, 2, 0); ++ ctx->cid_table->run_codes, 2, 2, 0)) < 0) ++ goto out; + + ctx->cid = cid; + } +- return 0; ++ ret = 0; ++out: ++ if (ret < 0) ++ av_log(ctx->avctx, AV_LOG_ERROR, "init_vlc failed\n"); ++ return ret; + } + + static int dnxhd_get_profile(int cid) +-- +2.31.1 + diff --git a/meta/recipes-multimedia/ffmpeg/ffmpeg_4.4.bb b/meta/recipes-multimedia/ffmpeg/ffmpeg_4.4.bb index 0c6af6549d..c0318ef01d 100644 --- a/meta/recipes-multimedia/ffmpeg/ffmpeg_4.4.bb +++ b/meta/recipes-multimedia/ffmpeg/ffmpeg_4.4.bb @@ -31,7 +31,8 @@ SRC_URI = "https://www.ffmpeg.org/releases/${BP}.tar.xz \ file://fix-CVE-2020-22021.patch \ file://fix-CVE-2020-22033-CVE-2020-22019.patch \ file://fix-CVE-2021-33815.patch \ - file://fix-CVE-2021-38171.patch \ + file://fix-CVE-2021-38171.patch \ + file://fix-CVE-2021-38114.patch \ " SRC_URI[sha256sum] = "06b10a183ce5371f915c6bb15b7b1fffbe046e8275099c96affc29e17645d909" -- cgit 1.2.3-korg