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Thu, 04 Sep 2025 13:38:30 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/222928 From: Archana Polampalli NULL Pointer Dereference in FFmpeg ALS Decoder (libavcodec/alsdec.c) Signed-off-by: Archana Polampalli --- .../ffmpeg/ffmpeg/CVE-2025-7700.patch | 52 +++++++++++++++++++ .../recipes-multimedia/ffmpeg/ffmpeg_5.0.3.bb | 1 + 2 files changed, 53 insertions(+) create mode 100644 meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2025-7700.patch diff --git a/meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2025-7700.patch b/meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2025-7700.patch new file mode 100644 index 0000000000..f61fab7bae --- /dev/null +++ b/meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2025-7700.patch @@ -0,0 +1,52 @@ +From aad4b59cfee1f0a3cf02f5e2b1f291ce013bf27e Mon Sep 17 00:00:00 2001 +From: Jiasheng Jiang +Date: Thu, 10 Jul 2025 16:26:39 +0000 +Subject: [PATCH] libavcodec/alsdec.c: Add check for av_malloc_array() and + av_calloc() + +Add check for the return value of av_malloc_array() and av_calloc() +to avoid potential NULL pointer dereference. + +Fixes: dcfd24b10c ("avcodec/alsdec: Implement floating point sample data decoding") +Signed-off-by: Jiasheng Jiang +Signed-off-by: Michael Niedermayer +(cherry picked from commit 35a6de137a39f274d5e01ed0e0e6c4f04d0aaf07) +Signed-off-by: Michael Niedermayer + +CVE: CVE-2025-7700 + +UPstream-Status: Backport [https://git.ffmpeg.org/gitweb/ffmpeg.git/commitdiff/aad4b59cfee1f0a3cf02f5e2b1f291ce013bf27e] + +Signed-off-by: Archana Polampalli +--- + libavcodec/alsdec.c | 8 ++++++-- + 1 file changed, 6 insertions(+), 2 deletions(-) + +diff --git a/libavcodec/alsdec.c b/libavcodec/alsdec.c +index 9c3be4e..ba85973 100644 +--- a/libavcodec/alsdec.c ++++ b/libavcodec/alsdec.c +@@ -2115,8 +2115,8 @@ static av_cold int decode_init(AVCodecContext *avctx) + ctx->nbits = av_malloc_array(ctx->cur_frame_length, sizeof(*ctx->nbits)); + ctx->mlz = av_mallocz(sizeof(*ctx->mlz)); + +- if (!ctx->mlz || !ctx->acf || !ctx->shift_value || !ctx->last_shift_value +- || !ctx->last_acf_mantissa || !ctx->raw_mantissa) { ++ if (!ctx->larray || !ctx->nbits || !ctx->mlz || !ctx->acf || !ctx->shift_value ++ || !ctx->last_shift_value || !ctx->last_acf_mantissa || !ctx->raw_mantissa) { + av_log(avctx, AV_LOG_ERROR, "Allocating buffer memory failed.\n"); + ret = AVERROR(ENOMEM); + goto fail; +@@ -2127,6 +2127,10 @@ static av_cold int decode_init(AVCodecContext *avctx) + + for (c = 0; c < avctx->channels; ++c) { + ctx->raw_mantissa[c] = av_calloc(ctx->cur_frame_length, sizeof(**ctx->raw_mantissa)); ++ if (!ctx->raw_mantissa[c]) { ++ av_log(avctx, AV_LOG_ERROR, "Allocating buffer memory failed.\n"); ++ return AVERROR(ENOMEM); ++ } + } + } + +-- +2.40.0 diff --git a/meta/recipes-multimedia/ffmpeg/ffmpeg_5.0.3.bb b/meta/recipes-multimedia/ffmpeg/ffmpeg_5.0.3.bb index 8da11f196d..f205c4a5db 100644 --- a/meta/recipes-multimedia/ffmpeg/ffmpeg_5.0.3.bb +++ b/meta/recipes-multimedia/ffmpeg/ffmpeg_5.0.3.bb @@ -48,6 +48,7 @@ SRC_URI = "https://www.ffmpeg.org/releases/${BP}.tar.xz \ file://CVE-2025-25473.patch \ file://CVE-2025-22919.patch \ file://CVE-2025-22921.patch \ + file://CVE-2025-7700.patch \ " SRC_URI[sha256sum] = "04c70c377de233a4b217c2fdf76b19aeb225a287daeb2348bccd978c47b1a1db"