packet-gsm_a_rr.c in the GSM A RR dissector in Wireshark 1.2.2 through 1.2.9 allows remote attackers to cause a denial of service (crash) via unknown vectors that trigger a NULL pointer dereference.
lists.opensuse.org/opensuse-security-announce/2011-01/msg00003.html
lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
secunia.com/advisories/42877
secunia.com/advisories/43068
www.vupen.com/english/advisories/2011/0076
www.vupen.com/english/advisories/2011/0212
www.wireshark.org/docs/relnotes/wireshark-1.2.10.html
bugs.wireshark.org/bugzilla/show_bug.cgi?id=4897
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11651