Bug 672420 - (CVE-2010-4656) CVE-2010-4656 kernel: iowarrior usb device heap overflow
CVE-2010-4656 kernel: iowarrior usb device heap overflow
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
: Security
Depends On: 672421 672422 672423
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Reported: 2011-01-24 23:02 EST by Eugene Teo (Security Response)
Modified: 2015-07-31 02:36 EDT (History)
12 users (show)

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Doc Type: Bug Fix
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Last Closed: 2015-07-29 09:41:54 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Eugene Teo (Security Response) 2011-01-24 23:02:29 EST
If the iowarrior devices in this case statement support more than 8 bytes per report, it is possible to write past the end of a kernel heap allocation. This will probably never be possible, but change the allocation to be more defensive anyway.

Upstream commit:


Red Hat would like to thank Kees Cook for reporting this issue.
Comment 3 Eugene Teo (Security Response) 2011-01-25 00:16:59 EST

This issue did not affect the versions of Linux kernel as shipped with Red Hat
Enterprise Linux 4 and 5 as they do not have support for the I/O-Warrior USB devices. This has been addressed in Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-0330.html. A future kernel update in Red Hat Enterprise Linux 6 may address this flaw.
Comment 4 errata-xmlrpc 2011-03-10 15:05:15 EST
This issue has been addressed in following products:

  MRG for RHEL-5

Via RHSA-2011:0330 https://rhn.redhat.com/errata/RHSA-2011-0330.html
Comment 5 errata-xmlrpc 2011-04-07 22:57:38 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:0421 https://rhn.redhat.com/errata/RHSA-2011-0421.html

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