From: Bhavesh R Maheshwari <[email protected]> Pick the patch from [1], also referenced in the NVD report [2].
[1] https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/e7cbfd1c507b57a806a5825b87d609963e862c8c [2] https://nvd.nist.gov/vuln/detail/cve-2026-66038 Signed-off-by: Bhavesh R Maheshwari <[email protected]> --- .../ffmpeg/ffmpeg/CVE-2026-66038.patch | 50 +++++++++++++++++++ .../recipes-multimedia/ffmpeg/ffmpeg_8.0.3.bb | 1 + 2 files changed, 51 insertions(+) create mode 100644 meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2026-66038.patch diff --git a/meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2026-66038.patch b/meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2026-66038.patch new file mode 100644 index 0000000000..4c2be95590 --- /dev/null +++ b/meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2026-66038.patch @@ -0,0 +1,50 @@ +From 5fc1e9d8af5019a83a5683e30d92c41c7a606c2d Mon Sep 17 00:00:00 2001 +From: Michael Niedermayer <[email protected]> +Date: Sun, 28 Jun 2026 19:04:07 +0200 +Subject: [PATCH] avcodec/lcldec: zero the not-decoded tail to avoid heap + disclosure + +Fixes: use of uninitialized memory +Fixes: CsNDKB1K1U0C +Fixes: e2c3aa8e2b (avcodec/lcldec: More space for rgb24) +Found-by: Adrian Junge (vurlo) +Signed-off-by: Michael Niedermayer <[email protected]> + +CVE: CVE-2026-66038 +Upstream-Status: Backport [https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/e7cbfd1c507b57a806a5825b87d609963e862c8c] + +Signed-off-by: Bhavesh R Maheshwari <[email protected]> +--- + libavcodec/lcldec.c | 8 +++++++- + 1 file changed, 7 insertions(+), 1 deletion(-) + +diff --git a/libavcodec/lcldec.c b/libavcodec/lcldec.c +index e9d4283eef..71c6d070e2 100644 +--- a/libavcodec/lcldec.c ++++ b/libavcodec/lcldec.c +@@ -119,6 +119,9 @@ static unsigned int mszh_decomp(const unsigned char * srcptr, int srclen, unsign + } + } + ++ if (destptr < destptr_end) ++ memset(destptr, 0, destptr_end - destptr); ++ + return destptr - destptr_bak; + } + +@@ -152,8 +155,11 @@ static int zlib_decomp(AVCodecContext *avctx, const uint8_t *src, int src_len, i + if (expected != (unsigned int)zstream->total_out) { + av_log(avctx, AV_LOG_ERROR, "Decoded size differs (%d != %lu)\n", + expected, zstream->total_out); +- if (expected > (unsigned int)zstream->total_out) ++ if (expected > (unsigned int)zstream->total_out) { ++ memset(c->decomp_buf + offset + zstream->total_out, 0, ++ c->decomp_size - offset - zstream->total_out); + return (unsigned int)zstream->total_out; ++ } + return AVERROR_UNKNOWN; + } + return zstream->total_out; +-- +2.53.0 + diff --git a/meta/recipes-multimedia/ffmpeg/ffmpeg_8.0.3.bb b/meta/recipes-multimedia/ffmpeg/ffmpeg_8.0.3.bb index c0623987f4..cbb436a9a1 100644 --- a/meta/recipes-multimedia/ffmpeg/ffmpeg_8.0.3.bb +++ b/meta/recipes-multimedia/ffmpeg/ffmpeg_8.0.3.bb @@ -40,6 +40,7 @@ SRC_URI = "https://www.ffmpeg.org/releases/${BP}.tar.xz \ file://CVE-2026-66036_p1.patch \ file://CVE-2026-66036_p2.patch \ file://CVE-2026-66037.patch \ + file://CVE-2026-66038.patch \ " SRC_URI[sha256sum] = "6136812ea6d4e68bdba27e33c2a94382711cdf4f8602ffef056ff792bd6f9818" -- 2.43.0
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