backport from upstream Signed-off-by: Kiran Surendran <[email protected]> --- .../ffmpeg/ffmpeg/fix-CVE-2021-38171.patch | 42 +++++++++++++++++++ meta/recipes-multimedia/ffmpeg/ffmpeg_4.4.bb | 3 +- 2 files changed, 44 insertions(+), 1 deletion(-) create mode 100644 meta/recipes-multimedia/ffmpeg/ffmpeg/fix-CVE-2021-38171.patch
diff --git a/meta/recipes-multimedia/ffmpeg/ffmpeg/fix-CVE-2021-38171.patch b/meta/recipes-multimedia/ffmpeg/ffmpeg/fix-CVE-2021-38171.patch new file mode 100644 index 0000000000..d82f3a4b63 --- /dev/null +++ b/meta/recipes-multimedia/ffmpeg/ffmpeg/fix-CVE-2021-38171.patch @@ -0,0 +1,42 @@ +CVE: CVE-2021-38171 +Upstream-Status: Backport +Signed-off-by: Kiran Surendran <[email protected]> + +From fb993619d1035fa9646506925ea70fb122038999 Mon Sep 17 00:00:00 2001 +From: maryam ebrahimzadeh <[email protected]> +Date: Wed, 4 Aug 2021 16:15:18 -0400 +Subject: [PATCH] avformat/adtsenc: return value check for init_get_bits in + adts_decode_extradata + +As the second argument for init_get_bits (buf) can be crafted, a return value check for this function call is necessary. +'buf' is part of 'AVPacket pkt'. +replace init_get_bits with init_get_bits8. + +Signed-off-by: Michael Niedermayer <[email protected]> +(cherry picked from commit 9ffa49496d1aae4cbbb387aac28a9e061a6ab0a6) +Signed-off-by: Michael Niedermayer <[email protected]> +--- + libavformat/adtsenc.c | 6 ++++-- + 1 file changed, 4 insertions(+), 2 deletions(-) + +diff --git a/libavformat/adtsenc.c b/libavformat/adtsenc.c +index 3595cb3bb2..c35a12a628 100644 +--- a/libavformat/adtsenc.c ++++ b/libavformat/adtsenc.c +@@ -51,9 +51,11 @@ static int adts_decode_extradata(AVFormatContext *s, ADTSContext *adts, const ui + GetBitContext gb; + PutBitContext pb; + MPEG4AudioConfig m4ac; +- int off; ++ int off, ret; + +- init_get_bits(&gb, buf, size * 8); ++ ret = init_get_bits8(&gb, buf, size); ++ if (ret < 0) ++ return ret; + off = avpriv_mpeg4audio_get_config2(&m4ac, buf, size, 1, s); + if (off < 0) + return off; +-- +2.31.1 + diff --git a/meta/recipes-multimedia/ffmpeg/ffmpeg_4.4.bb b/meta/recipes-multimedia/ffmpeg/ffmpeg_4.4.bb index fc1834c00b..0c6af6549d 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 \ + " SRC_URI[sha256sum] = "06b10a183ce5371f915c6bb15b7b1fffbe046e8275099c96affc29e17645d909" # Build fails when thumb is enabled: https://bugzilla.yoctoproject.org/show_bug.cgi?id=7717 -- 2.31.1
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