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authorPeter Harris <pharris@opentext.com>2017-02-14 15:19:18 +0000
committerMike Gabriel <mike.gabriel@das-netzwerkteam.de>2017-03-20 10:50:57 +0100
commitcbc2d300b984d7ebc789deac0642104f223c2920 (patch)
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Fix overflow of ConnectionOutput->size and ->count
commit 4b0d0df34f10a88c10cb23dd50087b59f5c4fece Author: Peter Harris <pharris@opentext.com> Date: Mon Nov 17 14:31:24 2014 -0500 Fix overflow of ConnectionOutput->size and ->count When (long) is larger than (int), and when realloc succeeds with sizes larger than INT_MAX, ConnectionOutput->size and ConnectionOutput->count overflow and become negative. When ConnectionOutput->count is negative, InsertIOV does not actually insert an IOV, and FlushClient goes into an infinite loop of writev(fd, iov, 0) [an empty list]. Avoid this situation by killing the client when it has more than INT_MAX unread bytes of data. Signed-off-by: Peter Harris <pharris@opentext.com> Reviewed-by: Keith Packard <keithp@keithp.com> Signed-off-by: Keith Packard <keithp@keithp.com> Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
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