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Date:      Tue, 03 Nov 2015 06:52:52 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 204230] [patch] bsdiff(1) - check file size against SIZE_MAX
Message-ID:  <bug-204230-8-pwBdjbrmb9@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-204230-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-204230-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=204230

--- Comment #3 from Andrey A. Chernov <ache@FreeBSD.org> ---
Comment on attachment 162714
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=162714
proposed fix

This fix is not pretty. 
1) It does not set errno (EFBIG)
2) Next overflow is few lines below:
if(((I=malloc((oldsize+1)*sizeof(off_t)))==NULL) ||
    ((V=malloc((oldsize+1)*sizeof(off_t)))==NULL)) err(1,NULL);

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