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The Linux kernel 2.6.0 through 2.6.30.4 and 2.4.4 through 2.4.37.4 does not initialize all function pointers for socket operations in proto_ops structures which allows local users to trigger a NULL pointer dereference and gain privileges by using mmap to map page zero placing arbitrary code on this page and then invoking an unavailable operation as demonstrated by the sendpage operation (sock_sendpage function) on a PF_PPPOX socket.

oval:org.mitre.oval:def:11591

The Linux kernel 2.6.0 through 2.6.30.4 and 2.4.4 through 2.4.37.4 does not initialize all function pointers for socket operations in proto_ops structures which allows local users to trigger a NULL pointer dereference and gain privileges by using mmap to map page zero placing arbitrary code on this page and then invoking an unavailable operation as demonstrated by the sendpage operation (sock_sendpage function) on a PF_PPPOX socket.

Family:
unix
Status:
ACCEPTED
Platform(s):
  • CentOS Linux 4
  • CentOS Linux 3
  • Red Hat Enterprise Linux 5
  • Oracle Linux 5
  • Red Hat Enterprise Linux 3
  • Oracle Linux 4
  • Red Hat Enterprise Linux 4
  • CentOS Linux 5
Class:
vulnerability
Reference(s):
  • CVE-2009-2692
Product(s):