Re[2]: [WBEL-users] RH Security Advisory

[Mickael Maddison]

>> Not really.  Most the issues require a local user (so they aren't remotely exploitable) and are just denial of service.From my perspective, a kernel vulnerability that allows a local user to so easily disrupt services in this way is a high priority.  You may not, but some of us have large numbers of local users depending on our environments needs.

I'm not expecting RH Network speed updates, but to at least take this seriously is important.

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A flaw was found in Linux kernel versions 2.4 and 2.6 for x86 and x86_64 that allowed local users to cause a denial of service (system crash) by triggering a signal handler with a certain sequence of fsave and frstor instructions.  The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-0554 to this issue.

Another flaw was discovered in an error path supporting the clone()
system call that allowed local users to cause a denial of service
(memory leak) by passing invalid arguments to clone() running in an
infinite loop of a user's program.  The Common Vulnerabilities and
Exposures project (cve.mitre.org) has assigned the name CAN-2004-0427
to this issue.

Enhancements were committed to the 2.6 kernel by Al Viro which enabled the Sparse source code checking tool to check for a certain class of kernel bugs. A subset of these fixes also applies to various drivers in the 2.4 kernel.  Although the majority of these resides in drivers unsupported in Red Hat Enterprise Linux 3, the flaws could lead to privilege escalation or access to kernel memory.  The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-0495 to these issues.

All Red Hat Enterprise Linux 3 users are advised to upgrade their kernels to the packages associated with their machine architectures and configurations as listed in this erratum.  These packages contain
backported patches to correct these issues.
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Friday, June 18, 2004, 8:21:19 AM, you wrote:

WW> could you post the text here on the list please?  I am getting error
WW> 500's here.

WW> Mickael Maddison wrote:

>> Hello Whitebox-users,
>> 
>> https://rhn.redhat.com/network/errata/errata_details.pxt?eid=2200Thanks
>> in advance for adding the associated RPM to our updates and mirrors
>> very soon.  This is a big one it seems.
>> 




-- 
Best regards,
 Mickael                            mailto:mike@kamloopsbc.com