[FFmpeg-devel] [PATCH] avcodec/put_bits: fix off be one

[Paul B Mahol]

On 1/24/16, Ronald S. Bultje <rsbultje at gmail.com> wrote:
> Hi,
>
> On Sun, Jan 24, 2016 at 12:02 PM, Paul B Mahol <onemda at gmail.com> wrote:
>
>> On 1/24/16, Paul B Mahol <onemda at gmail.com> wrote:
>> > On 1/24/16, Ronald S. Bultje <rsbultje at gmail.com> wrote:
>> >> Hi,
>> >>
>> >> On Sun, Jan 24, 2016 at 11:41 AM, Paul B Mahol <onemda at gmail.com>
>> wrote:
>> >>
>> >>> patch attached.
>> >>
>> >>
>> >> I think that's wrong. buf_end is buf_start+size, so if size=1, this
>> >> allows
>> >> writing up to and including buf_start[1], which overflows size=1.
>> >
>> > Assert happens otherwise when encoding flac.
>> >
>>
>> ffmpeg -i http://granjow.net/uploads/kdenlive/samples/red-leaf-tips.avi
>> o.flac
>
>
> Is there a trac issue to track this? Do you have a backtrace?

No, can you reproduce it?