kmod in the Linux kernel does not set its uid, suid, gid, or sgid to 0, which allows local users to cause a denial of service (crash) by sending certain signals to kmod.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9423
https://exchange.xforce.ibmcloud.com/vulnerabilities/15577
http://www.redhat.com/support/errata/RHSA-2004-188.html
http://www.redhat.com/support/errata/RHSA-2004-106.html
http://www.redhat.com/support/errata/RHSA-2004-069.html
http://www.redhat.com/support/errata/RHSA-2004-065.html
http://www.novell.com/linux/security/advisories/2003_049_kernel.html
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000820