CVE-2009-1895

Linux kernel <2.6.31-rc3 - Memory Corruption

Title source: llm
STIX 2.1

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).

References (35)

Core 35
Core References
Third Party Advisory vendor-advisory x_refsource_fedora
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00223.html
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/512019/100/0/threaded
Third Party Advisory x_refsource_confirm
http://wiki.rpath.com/Advisories:rPSA-2009-0111
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/36131
Broken Link vdb-entry x_refsource_osvdb
http://www.osvdb.org/55807
Patch, Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2009/1866
Third Party Advisory vendor-advisory x_refsource_redhat
https://rhn.redhat.com/errata/RHSA-2009-1540.html
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/37471
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/36759
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2009/dsa-1844
Third Party Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/usn-807-1
Third Party Advisory x_refsource_confirm
http://www.vmware.com/security/advisories/VMSA-2009-0016.html
Third Party Advisory vendor-advisory x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2009-1193.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/35647
Third Party Advisory vendor-advisory x_refsource_fedora
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00166.html
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/505254/100/0/threaded
Patch, Third Party Advisory x_refsource_misc
http://blog.cr0.org/2009/06/bypassing-linux-null-pointer.html
Third Party Advisory vendor-advisory x_refsource_mandriva
http://www.mandriva.com/security/advisories?name=MDVSA-2011:051
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/507985/100/0/threaded
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/36051
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/36045
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/36116
Third Party Advisory vendor-advisory x_refsource_redhat
https://rhn.redhat.com/errata/RHSA-2009-1550.html
Patch, Vendor Advisory x_refsource_confirm
http://patchwork.kernel.org/patch/32598/
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/35801
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/36054
Third Party Advisory x_refsource_confirm
https://bugs.launchpad.net/bugs/cve/2009-1895
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2009/dsa-1845
Third Party Advisory vendor-advisory x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2009-1438.html
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2009/3316

Scores

EPSS 0.0044
EPSS Percentile 35.8%

Details

CWE
CWE-16
Status published
Products (8)
canonical/ubuntu_linux 6.06
canonical/ubuntu_linux 8.04
canonical/ubuntu_linux 8.10
canonical/ubuntu_linux 9.04
debian/debian_linux 4.0
debian/debian_linux 5.0
linux/linux_kernel 2.6.31 rc1 (2 CPE variants)
linux/linux_kernel < 2.6.31
Published Jul 16, 2009
Tracked Since Feb 18, 2026