Bug 648659 (CVE-2010-4074) - CVE-2010-4074 kernel: drivers/usb/serial/mos*.c: reading uninitialized stack memory
Summary: CVE-2010-4074 kernel: drivers/usb/serial/mos*.c: reading uninitialized stack ...
Status: NEW
Alias: CVE-2010-4074
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: Unspecified
OS: Unspecified
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: public=20100915,reported=20101006,sou...
Keywords: Security
Depends On: 648696 648697 648698
Blocks:
TreeView+ depends on / blocked
 
Reported: 2010-11-01 21:17 UTC by Petr Matousek
Modified: 2019-06-08 18:39 UTC (History)
8 users (show)

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Clone Of:
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Last Closed:


Attachments (Terms of Use)


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2010:0958 normal SHIPPED_LIVE Important: kernel-rt security and bug fix update 2010-12-08 19:08:55 UTC
Red Hat Product Errata RHSA-2011:0007 normal SHIPPED_LIVE Important: kernel security and bug fix update 2011-01-11 19:44:55 UTC

Description Petr Matousek 2010-11-01 21:17:36 UTC
Description of problem:
The TIOCGICOUNT device ioctl in both mos7720.c and mos7840.c allows unprivileged users to read uninitialized stack memory, because the "reserved" member of the serial_icounter_struct struct declared on the stack is not altered or zeroed before being copied back to the user.

Reference:
http://www.openwall.com/lists/oss-security/2010/10/06/6
http://lkml.org/lkml/2010/9/15/392

Acknowledgements:

Red Hat would like to thank Dan Rosenberg for reporting this issue.

Comment 2 Petr Matousek 2010-11-02 10:42:38 UTC
Statement:

This issue did not affect the versions of Linux kernel as shipped with Red Hat
Enterprise Linux 3, 4, and 5 as they did not include support for Moschip USB
serial port adapters.

Comment 3 Eugene Teo (Security Response) 2010-11-04 07:54:00 UTC
Upstream commit:
http://git.kernel.org/linus/a0846f1868b11cd827bdfeaf4527d8b1b1c0b098

Comment 4 errata-xmlrpc 2010-12-08 19:09:54 UTC
This issue has been addressed in following products:

  MRG for RHEL-5

Via RHSA-2010:0958 https://rhn.redhat.com/errata/RHSA-2010-0958.html

Comment 5 errata-xmlrpc 2011-01-11 19:46:23 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:0007 https://rhn.redhat.com/errata/RHSA-2011-0007.html


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