Bug 1022063

Summary: socat: out-of-range shifts
Product: Red Hat Enterprise Linux 7 Reporter: Florian Weimer <fweimer>
Component: socatAssignee: Paul Wouters <pwouters>
Status: CLOSED CURRENTRELEASE QA Contact: BaseOS QE Security Team <qe-baseos-security>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.0CC: gerhard, jaster, omoris
Target Milestone: rc   
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Hardware: All   
OS: Linux   
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Fixed In Version: 1.7.3.1-1 Doc Type: If docs needed, set a value
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Last Closed: 2018-11-13 11:00:07 UTC Type: Bug
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Bug Blocks: 1019961, 1085024    

Description Florian Weimer 2013-10-22 15:07:54 UTC
Shifting ints by 32 bits (bits == 0) may not give the expected result in xioparsenetwork_ip4() in xio-ip4.c:
      netmask_in->s_addr = htonl((0xffffffff << (32-bits)));
xioparsenetwork_ip6() has a similar problem (with 128).

Such out-of-range shifts are undefined and the outcome differs on different architectures.

Comment 2 Gerhard 2014-03-10 21:07:25 UTC
Has been fixed in upstream release 1.7.2.4

Comment 5 Paul Wouters 2018-11-13 11:00:07 UTC
This bug is addressed by ERRATA RHBA-2017:2049-03 socat bug fix update

https://errata.devel.redhat.com/advisory/26967