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Re: [patch] Fix BZ 19165 -- overflow in fread / fwrite

From: Alexander Cherepanov <ch3root at openwall dot com>
To: Paul Pluzhnikov <ppluzhnikov at google dot com>, Rich Felker <dalias at libc dot org>
Cc: GLIBC Devel <libc-alpha at sourceware dot org>, Florian Weimer <fweimer at redhat dot com>, "Joseph S. Myers" <joseph at codesourcery dot com>
Date: Tue, 27 Oct 2015 21:21:28 +0300
Subject: Re: [patch] Fix BZ 19165 -- overflow in fread / fwrite
Authentication-results: sourceware.org; auth=none
References: <CALoOobOpSFwNOqD2RbsSQ95+16=xWN=fTpDJZqgPGJPSXCDmEA at mail dot gmail dot com> <20151026200605 dot GI8645 at brightrain dot aerifal dot cx> <CALoOobPxCPN_Lwvc98CevgCJMwHa_9cURZsALsLeG+SPDSF+Xw at mail dot gmail dot com> <CALoOobOn9ni8FXK3W4ZGAEHSnYAEVUn10agEyC8NO62TyWg0ig at mail dot gmail dot com>

On 2015-10-27 05:06, Paul Pluzhnikov wrote:

On Mon, Oct 26, 2015 at 7:04 PM, Paul Pluzhnikov <ppluzhnikov@google.com> wrote:

[BZ #19165]
         * libio/libioP.h (_IO_saturating_umull): New.
         * libio/iofread.c (_IO_fread): Use it.
         * ibio/iofread_u.c (__fread_unlocked): Likewise.
         * libio/iofwrite.c (_IO_fwrite): Error on overflow.
         * libio/iofwrite_u.c (fwrite_unlocked): Likewise.


Oops. Let's try that again:

2015-10-26  Paul Pluzhnikov  <ppluzhnikov@google.com>

         [BZ #19165]
         * libio/libioP.h (_IO_saturating_umull): New.
         * libio/iofread.c (_IO_fread): Use it.
         * ibio/iofread_u.c (__fread_unlocked): Likewise.


libio here?

         * libio/iofwrite.c (_IO_fwrite): Likewise.
         * libio/iofwrite_u.c (fwrite_unlocked): Likewise.


--
Alexander Cherepanov

References:
- [patch] Fix BZ 19165 -- overflow in fread / fwrite
  - From: Paul Pluzhnikov
- Re: [patch] Fix BZ 19165 -- overflow in fread / fwrite
  - From: Rich Felker
- Re: [patch] Fix BZ 19165 -- overflow in fread / fwrite
  - From: Paul Pluzhnikov
- Re: [patch] Fix BZ 19165 -- overflow in fread / fwrite
  - From: Paul Pluzhnikov

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