CVE-2009-2911 Information

Description

SystemTap 1.0 when the –unprivileged option is used does not properly restrict certain data sizes which allows local users to (1) cause a denial of service or gain privileges via a print operation with a large number of arguments that trigger a kernel stack overflow (2) cause a denial of service via crafted DWARF expressions that trigger a kernel stack frame overflow or (3) cause a denial of service (infinite loop) via vectors that trigger creation of large unwind tables related to Common Information Entry (CIE) and Call Frame Instruction (CFI) records.

Reference

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41633 http://secunia.com/advisories/37167 http://sources.redhat.com/bugzilla/show_bug.cgi?id=10750 http://www.openwall.com/lists/oss-security/2009/10/21/1 http://www.securityfocus.com/bid/36778 http://www.vupen.com/english/advisories/2009/2989 https://bugzilla.redhat.com/show_bug.cgi?id=529175 https://www.redhat.com/archives/fedora-package-announce/2009-October/msg00627.html https://www.redhat.com/archives/fedora-package-announce/2009-October/msg00793.html