Note: This is an archival copy of Security Sun Alert 238688 as previously published on http://sunsolve.sun.com.|
Latest version of this security advisory is available from http://support.oracle.com as Sun Alert 1019345.1.
Solaris 10 Operating System
Date of Resolved Release
Kernel Security Vulnerability on Solaris Systems Using the Sun UltraSPARC T2 and UltraSPARC T2+ Processors May Allow Denial of Service (DoS)
A security vulnerability in the processor specific kernel module for Sun UltraSPARC T2 and UltraSPARC T2+ systems may allow a local unprivileged user to panic the system, which is a type of Denial of Service(DoS).
2. Contributing Factors
This issue can occur in the following releases:
$ modinfo | grep SUNW,UltraSPARC-T2
If output such as:
3 12c3d40 5450 - 0 SUNW,UltraSPARC-T2 ()
4 121c460 6520 - 0 SUNW,UltraSPARC-T2+ ()
is seen, then the system has a Sun UltraSPARC T2 or UltraSPARC T2+ processor.
If the described issue occurs, the system may panic with a stack strace similar to the following:
To prevent this issue from occurring until patches can be applied, the system-wide core file options can be modified to disable core dumps using coreadm(1M) as in the following example:
# coreadm -d process -d global -d global-setid -d proc-setid
This issue is addressed in the following releases:
For more information
on Security Sun Alerts, see 1009886.1.
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