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[89.74.12.251]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-52e71313206sm18547e87.188.2024.06.26.17.41.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 26 Jun 2024 17:41:31 -0700 (PDT) From: =?utf-8?q?Kacper_Michaj=C5=82ow?= To: ffmpeg-devel@ffmpeg.org Date: Thu, 27 Jun 2024 02:40:35 +0200 Message-ID: <20240627004037.1336-2-kasper93@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240627004037.1336-1-kasper93@gmail.com> References: <20240627004037.1336-1-kasper93@gmail.com> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH 2/4] avcodec/parser: ensure input padding is zeroed 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 Cc: =?utf-8?q?Kacper_Michaj=C5=82ow?= Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" X-TUID: uXImOfJiHcGD Fixes use of uninitialized value, reported by MSAN. Found by OSS-Fuzz. Signed-off-by: Kacper Michajłow --- libavcodec/parser.c | 1 + 1 file changed, 1 insertion(+) diff --git a/libavcodec/parser.c b/libavcodec/parser.c index af17ee9c15..426cc314fb 100644 --- a/libavcodec/parser.c +++ b/libavcodec/parser.c @@ -236,6 +236,7 @@ int ff_combine_frame(ParseContext *pc, int next, } pc->buffer = new_buffer; memcpy(&pc->buffer[pc->index], *buf, *buf_size); + memset(&pc->buffer[pc->index + *buf_size], 0, AV_INPUT_BUFFER_PADDING_SIZE); pc->index += *buf_size; return -1; }