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The do_sigaltstack function in kernel/signal.c in Linux kernel 2.4 through 2.4.37 and 2.6 before 2.6.31-rc5 when running on 64-bit systems does not clear certain padding bytes from a structure which allows local users to obtain sensitive information from the kernel stack via the sigaltstack function.

oval:org.mitre.oval:def:10637

The do_sigaltstack function in kernel/signal.c in Linux kernel 2.4 through 2.4.37 and 2.6 before 2.6.31-rc5 when running on 64-bit systems does not clear certain padding bytes from a structure which allows local users to obtain sensitive information from the kernel stack via the sigaltstack function.

Family:
unix
Status:
ACCEPTED
Platform(s):
  • Oracle Linux 5
  • Red Hat Enterprise Linux 4
  • Oracle Linux 4
  • CentOS Linux 5
  • CentOS Linux 4
  • Red Hat Enterprise Linux 5
Class:
vulnerability
Reference(s):
  • CVE-2009-2847
Product(s):