The Linux kernel before 2.6.25.10 does not properly perform tty operations, which allows local users to cause a denial of service (system crash) or possibly gain privileges via vectors involving NULL pointer dereference of function pointers in (1) hamradio/6pack.c, (2) hamradio/mkiss.c, (3) irda/irtty-sir.c, (4) ppp_async.c, (5) ppp_synctty.c, (6) slip.c, (7) wan/x25_asy.c, and (8) wireless/strip.c in drivers/net/.
git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.25.y.git%3Ba=commitdiff%3Bh=2a739dd53ad7ee010ae6e155438507f329dce788
kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25.10
lists.opensuse.org/opensuse-security-announce/2008-07/msg00007.html
lists.opensuse.org/opensuse-security-announce/2008-07/msg00009.html
lists.opensuse.org/opensuse-security-announce/2008-07/msg00012.html
lists.opensuse.org/opensuse-security-announce/2008-10/msg00000.html
lists.opensuse.org/opensuse-security-announce/2008-10/msg00003.html
lists.opensuse.org/opensuse-security-announce/2008-10/msg00008.html
lists.opensuse.org/opensuse-security-announce/2008-11/msg00001.html
secunia.com/advisories/30982
secunia.com/advisories/31048
secunia.com/advisories/31202
secunia.com/advisories/31229
secunia.com/advisories/31341
secunia.com/advisories/31551
secunia.com/advisories/31614
secunia.com/advisories/31685
secunia.com/advisories/32103
secunia.com/advisories/32370
secunia.com/advisories/32759
secunia.com/advisories/33201
support.avaya.com/elmodocs2/security/ASA-2008-365.htm
www.debian.org/security/2008/dsa-1630
www.openwall.com/lists/oss-security/2008/07/03/2
www.redhat.com/support/errata/RHSA-2008-0612.html
www.redhat.com/support/errata/RHSA-2008-0665.html
www.redhat.com/support/errata/RHSA-2008-0973.html
www.securityfocus.com/bid/30076
www.vupen.com/english/advisories/2008/2063/references
exchange.xforce.ibmcloud.com/vulnerabilities/43687
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11632
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6633
usn.ubuntu.com/637-1/