NetSight
IP …
high7.2

CVE-2009-1895

The personality subsystem in the Linux kernel before 2.6.31-rc3 has a PER_CLEAR_ON_SETID setting that does not clear the ADDR_COMPAT_LAYOUT and MMAP_PAGE_ZERO …

Impact

The personality subsystem in the Linux kernel before 2.6.31-rc3 has a PER_CLEAR_ON_SETID setting that does not clear the ADDR_COMPAT_LAYOUT and MMAP_PAGE_ZERO flags when executing a setuid or setgid program, which makes it easier for local users to leverage the details of memory usage to (1) conduct NULL pointer dereference attacks, (2) bypass the mmap_min_addr protection mechanism, or (3) defeat address space layout randomization (ASLR).

Affected products

VendorProductAffected versions
LinuxLinux Kernel
through 2.6.31
Version 2.6.31
DebianDebian Linux
Versions 4.0, 5.0
CanonicalUbuntu Linux
Versions 6.06, 8.04, 8.10, 9.04

Weakness classification

CWE-16

References