PR #20188 opened by Michael Niedermayer (michaelni) URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20188 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20188.patch
clr is passing into decode_run_p() its not used when not set but this possibly triggers msan (it doesnt locally) Fixes?: use of uninintialized memory Fixes?: 436997807/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SCPR_fuzzer-6253316466606080 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> >From 670f61dbe510aaf13c8a316a6773a67b9b3d521a Mon Sep 17 00:00:00 2001 From: Michael Niedermayer <mich...@niedermayer.cc> Date: Fri, 8 Aug 2025 23:19:03 +0200 Subject: [PATCH] avcodec/scpr3: Clear clr clr is passing into decode_run_p() its not used when not set but this possibly triggers msan (it doesnt locally) Fixes?: use of uninintialized memory Fixes?: 436997807/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SCPR_fuzzer-6253316466606080 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/scpr3.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/scpr3.c b/libavcodec/scpr3.c index e91c198308..369d2653c2 100644 --- a/libavcodec/scpr3.c +++ b/libavcodec/scpr3.c @@ -1167,7 +1167,7 @@ static int decompress_p3(AVCodecContext *avctx, } } else { int run, bx = x * 16 + sx1, by = y * 16 + sy1; - uint32_t clr, ptype = 0, r, g, b; + uint32_t clr = 0, ptype = 0, r, g, b; if (bx >= avctx->width) return AVERROR_INVALIDDATA; -- 2.49.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
