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Thu, 14 Mar 2024 12:52:19 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Sean McGovern Date: Thu, 14 Mar 2024 15:52:08 -0400 Message-ID: To: FFmpeg development discussions and patches Subject: Re: [FFmpeg-devel] [PATCH] avformat/avidec: Fix integer overflow iff ULONG_MAX < INT64_MAX 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="utf-8" Content-Transfer-Encoding: base64 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: QW5kcmVhczoKCk9uIFR1ZSwgTWFyIDEyLCAyMDI0IGF0IDY6NTfigK9QTSBBbmRyZWFzIFJoZWlu aGFyZHQKPGFuZHJlYXMucmhlaW5oYXJkdEBvdXRsb29rLmNvbT4gd3JvdGU6Cj4KPiBBZmZlY3Rz IG1hbnkgRkFURS10ZXN0cywgc2VlCj4gaHR0cDovL2ZhdGUuZmZtcGVnLm9yZy9yZXBvcnQuY2dp P3RpbWU9MjAyNDAzMTIwMTEwMTYmc2xvdD1wcGMtbGludXgtZ2NjLTEzLjItdWJzYW4tYWx0aXZl Yy1xZW11Cj4KPiBTaWduZWQtb2ZmLWJ5OiBBbmRyZWFzIFJoZWluaGFyZHQgPGFuZHJlYXMucmhl aW5oYXJkdEBvdXRsb29rLmNvbT4KPiAtLS0KPiAgbGliYXZmb3JtYXQvYXZpZGVjLmMgfCAyICst Cj4gIDEgZmlsZSBjaGFuZ2VkLCAxIGluc2VydGlvbigrKSwgMSBkZWxldGlvbigtKQo+Cj4gZGlm ZiAtLWdpdCBhL2xpYmF2Zm9ybWF0L2F2aWRlYy5jIGIvbGliYXZmb3JtYXQvYXZpZGVjLmMKPiBp bmRleCBmMzE4M2IyNjk4Li5iN2NiZjE0OGFmIDEwMDY0NAo+IC0tLSBhL2xpYmF2Zm9ybWF0L2F2 aWRlYy5jCj4gKysrIGIvbGliYXZmb3JtYXQvYXZpZGVjLmMKPiBAQCAtMTY5Niw3ICsxNjk2LDcg QEAgc3RhdGljIGludCBjaGVja19zdHJlYW1fbWF4X2RyaWZ0KEFWRm9ybWF0Q29udGV4dCAqcykK PiAgICAgIGludCAqaWR4ID0gYXZfY2FsbG9jKHMtPm5iX3N0cmVhbXMsIHNpemVvZigqaWR4KSk7 Cj4gICAgICBpZiAoIWlkeCkKPiAgICAgICAgICByZXR1cm4gQVZFUlJPUihFTk9NRU0pOwo+IC0g ICAgZm9yIChtaW5fcG9zID0gcG9zID0gMDsgbWluX3BvcyAhPSBJTlQ2NF9NQVg7IHBvcyA9IG1p bl9wb3MgKyAxTFUpIHsKPiArICAgIGZvciAobWluX3BvcyA9IHBvcyA9IDA7IG1pbl9wb3MgIT0g SU5UNjRfTUFYOyBwb3MgPSBtaW5fcG9zICsgKHVpbnQ2NF90KTEpIHsKPiAgICAgICAgICBpbnQ2 NF90IG1heF9kdHMgPSBJTlQ2NF9NSU4gLyAyOwo+ICAgICAgICAgIGludDY0X3QgbWluX2R0cyA9 IElOVDY0X01BWCAvIDI7Cj4gICAgICAgICAgaW50NjRfdCBtYXhfYnVmZmVyID0gMDsKPiAtLQo+ IDIuNDAuMQo+Cj4gX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X18KPiBmZm1wZWctZGV2ZWwgbWFpbGluZyBsaXN0Cj4gZmZtcGVnLWRldmVsQGZmbXBlZy5vcmcK PiBodHRwczovL2ZmbXBlZy5vcmcvbWFpbG1hbi9saXN0aW5mby9mZm1wZWctZGV2ZWwKPgo+IFRv IHVuc3Vic2NyaWJlLCB2aXNpdCBsaW5rIGFib3ZlLCBvciBlbWFpbAo+IGZmbXBlZy1kZXZlbC1y ZXF1ZXN0QGZmbXBlZy5vcmcgd2l0aCBzdWJqZWN0ICJ1bnN1YnNjcmliZSIuCgpDb25maXJtaW5n IHRoYXQgdGhpcyBmaXhlcyBmYXRlLXYyMTAgKGFuZCBwcm9iYWJseSBtYW55IG1vcmUpIG9uIG15 ClBvd2VyUEMgUUVNVSBzZXR1cCAtLSBpdCB3YXMgbm90IGZhaWxpbmcgb24gUE9XRVI3IChwcGM2 NCkgb3IgUE9XRVI5CihwcGM2NGxlKSBhbmQgcmVtYWlucyBzbyB3aXRoIHRoZSBwYXRjaCBhcHBs aWVkLgoKVGhhbmtzLApTZWFuIE1jR292ZXJuCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fCmZmbXBlZy1kZXZlbCBtYWlsaW5nIGxpc3QKZmZtcGVnLWRldmVs QGZmbXBlZy5vcmcKaHR0cHM6Ly9mZm1wZWcub3JnL21haWxtYW4vbGlzdGluZm8vZmZtcGVnLWRl dmVsCgpUbyB1bnN1YnNjcmliZSwgdmlzaXQgbGluayBhYm92ZSwgb3IgZW1haWwKZmZtcGVnLWRl dmVsLXJlcXVlc3RAZmZtcGVnLm9yZyB3aXRoIHN1YmplY3QgInVuc3Vic2NyaWJlIi4K