A local unprivileged user may be able to hang an x86 system that has loaded the kernel debugger kmdb(1). The ability to hang a system is a type of Denial of Service (DoS).

This issue can occur in the following release:

x86 Platform

• Solaris 10 without patch 118855-15

Note 1: This issue does not affect the SPARC platform.

Note 2: This issue does not affect Solaris 8 or 9.

Note 3: This issue only affects systems which have loaded the kernel debugger, kmdb(1). In order to determine if a system has loaded kmdb(1) the following command can be used:

    $ modinfo | grep kmdb
    178 f7d54ce8 3b8 171 1 kmdb (kmdb driver 1.3)

If the system has not loaded kmdb(1), no output will be seen.

If the described issue occurs, the system will hang and be inaccessible both locally and via the network.

There is no workaround. Please see the "Resolution" section below.

This issue is addressed in the following release:

x86 Platform

• Solaris 10 with patch 118855-15 or later

This solution has no attachment