CVE-2009-1895

HighCVSS 7.2/10Last modified Jun 16, 2026

Description

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).

Metrics

CVSS 2.0 7.2/10AV:L/AC:L/Au:N/C:C/I:C/A:C

Weakness enumeration

CWE-16

Affected software

No affected versions have been published.

Timeline

Published: Jul 16, 2009
Last modified: Jun 16, 2026
NVD status: Modified

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