The isdn_ioctl function in isdn_common.c in Linux kernel 2.6.23 allows local users to cause a denial of service via a crafted ioctl struct in which iocts is not null terminated, which triggers a buffer overflow.
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=eafe1aa37e6ec2d56f14732b5240c4dd09f0613a
lists.opensuse.org/opensuse-security-announce/2008-02/msg00005.html
lists.opensuse.org/opensuse-security-announce/2008-03/msg00007.html
lists.opensuse.org/opensuse-security-announce/2008-07/msg00002.html
lists.vmware.com/pipermail/security-announce/2008/000023.html
rhn.redhat.com/errata/RHSA-2008-0055.html
secunia.com/advisories/28626
secunia.com/advisories/28706
secunia.com/advisories/28748
secunia.com/advisories/28889
secunia.com/advisories/28971
secunia.com/advisories/29058
secunia.com/advisories/29570
secunia.com/advisories/30110
secunia.com/advisories/30962
secunia.com/advisories/31246
secunia.com/advisories/33280
www.debian.org/security/2008/dsa-1479
www.debian.org/security/2008/dsa-1503
www.debian.org/security/2008/dsa-1504
www.mandriva.com/security/advisories?name=MDVSA-2008:086
www.mandriva.com/security/advisories?name=MDVSA-2008:112
www.redhat.com/support/errata/RHSA-2008-0211.html
www.redhat.com/support/errata/RHSA-2008-0787.html
www.securityfocus.com/bid/27497
www.ubuntu.com/usn/usn-574-1
www.ubuntu.com/usn/usn-578-1
www.vupen.com/english/advisories/2008/2222/references
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10971