Integer underflow in the irda_getsockopt function in net/irda/af_irda.c in the Linux kernel before 2.6.37 on platforms other than x86 allows local users to obtain potentially sensitive information from kernel heap memory via an IRLMP_ENUMDEVICES getsockopt call.
http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00002.html
http://openwall.com/lists/oss-security/2010/12/23/1
http://openwall.com/lists/oss-security/2011/01/03/1
http://secunia.com/advisories/42684