From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.ffmpeg.org (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTPS id 9E8764CCC8 for ; Fri, 8 Aug 2025 21:30:37 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.ffmpeg.org (Postfix) with ESMTP id 6647568CD50; Sat, 9 Aug 2025 00:30:33 +0300 (EEST) Received: from 0f9ae49ae7c8 (code.ffmpeg.org [188.245.149.3]) by ffbox0-bg.ffmpeg.org (Postfix) with ESMTPS id 42B4C68B13F for ; Sat, 9 Aug 2025 00:30:32 +0300 (EEST) MIME-Version: 1.0 From: Michael Niedermayer To: ffmpeg-devel@ffmpeg.org Subject: [FFmpeg-devel] =?utf-8?q?=5BPATCH=5D_avcodec/scpr3=3A_Clear_clr_?= =?utf-8?b?KFBSICMyMDE4OCk=?= X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Message-Id: <20250808213033.6647568CD50@ffbox0-bg.ffmpeg.org> Date: Sat, 9 Aug 2025 00:30:33 +0300 (EEST) Archived-At: List-Archive: List-Post: 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 >From 670f61dbe510aaf13c8a316a6773a67b9b3d521a Mon Sep 17 00:00:00 2001 From: Michael Niedermayer 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 --- 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-request@ffmpeg.org with subject "unsubscribe".