The asn1 implementation in (a) the Linux kernel 2.4 before 2.4.36.6 and 2.6 before 2.6.25.5, as used in the cifs and ip_nat_snmp_basic modules; and (b) the gxsnmp package; does not properly validate length values during decoding of ASN.1 BER data, which allows remote attackers to cause a denial of service (crash) or execute arbitrary code via (1) a length greater than the working buffer, which can lead to an unspecified overflow; (2) an oid length of zero, which can lead to an off-by-one error; or (3) an indefinite length for a primitive encoding.
https://www.redhat.com/archives/fedora-package-announce/2008-June/msg00587.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/42921
https://bugzilla.redhat.com/show_bug.cgi?id=443962
http://www.vupen.com/english/advisories/2008/1770
http://www.ubuntu.com/usn/usn-625-1
http://www.securitytracker.com/id?1020210
http://www.securityfocus.com/bid/29589
http://www.securityfocus.com/archive/1/493300/100/0/threaded
http://www.mandriva.com/security/advisories?name=MDVSA-2008:174
http://www.mandriva.com/security/advisories?name=MDVSA-2008:113
http://www.debian.org/security/2008/dsa-1592
http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0189
http://secunia.com/advisories/32759
http://secunia.com/advisories/32370
http://secunia.com/advisories/32104
http://secunia.com/advisories/32103
http://secunia.com/advisories/31836
http://secunia.com/advisories/31107
http://secunia.com/advisories/30982
http://secunia.com/advisories/30658
http://secunia.com/advisories/30644
http://secunia.com/advisories/30580
http://secunia.com/advisories/30000
http://lists.opensuse.org/opensuse-security-announce/2008-11/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00008.html
http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2008-07/msg00012.html
http://lists.opensuse.org/opensuse-security-announce/2008-07/msg00007.html
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25.5