Is CVE-2009-1895 being actively exploited?

CVE-2009-1895 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2009-1895?

CVE-2009-1895 has a CVSS 2.0 base score of 7.2 (HIGH).

CVE-2009-1895

HIGH · CVSS 7.2EPSS 0.4%EU EUVD

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).

Key facts

CVSS score: 7.2 (v2.0)
Severity: HIGH
CVSS vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Weakness (CWE): CWE-16
EPSS score: 0.4% (38th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2009-1890)
Published: July 16, 2009
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2009-1890 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
debian / debian linux
debian / debian linux
linux / linux kernel
linux / linux kernel
linux / linux kernel

References

http://blog.cr0.org/2009/06/bypassing-linux-null-pointer.html(Patch, Third Party Advisory)
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f9fabcb58a6d26d6efde842d1703ac7cfa9427b6
http://patchwork.kernel.org/patch/32598/(Patch, Vendor Advisory)
http://secunia.com/advisories/35801(Third Party Advisory)
http://secunia.com/advisories/36045(Third Party Advisory)
http://secunia.com/advisories/36051(Third Party Advisory)
http://secunia.com/advisories/36054(Third Party Advisory)
http://secunia.com/advisories/36116(Third Party Advisory)
http://secunia.com/advisories/36131(Third Party Advisory)
http://secunia.com/advisories/36759(Third Party Advisory)
http://secunia.com/advisories/37471(Third Party Advisory)
http://wiki.rpath.com/Advisories:rPSA-2009-0111(Third Party Advisory)
http://www.debian.org/security/2009/dsa-1844(Third Party Advisory)
http://www.debian.org/security/2009/dsa-1845(Third Party Advisory)
http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc3(Vendor Advisory)
http://www.mandriva.com/security/advisories?name=MDVSA-2011:051(Third Party Advisory)
http://www.osvdb.org/55807(Broken Link)
http://www.redhat.com/support/errata/RHSA-2009-1193.html(Third Party Advisory)
http://www.redhat.com/support/errata/RHSA-2009-1438.html(Third Party Advisory)
http://www.securityfocus.com/archive/1/505254/100/0/threaded(Third Party Advisory, VDB Entry)
http://www.securityfocus.com/archive/1/507985/100/0/threaded(Third Party Advisory, VDB Entry)
http://www.securityfocus.com/archive/1/512019/100/0/threaded(Third Party Advisory, VDB Entry)
http://www.securityfocus.com/bid/35647(Third Party Advisory, VDB Entry)
http://www.ubuntu.com/usn/usn-807-1(Third Party Advisory)
http://www.vmware.com/security/advisories/VMSA-2009-0016.html(Third Party Advisory)
http://www.vupen.com/english/advisories/2009/1866(Patch, Third Party Advisory)
http://www.vupen.com/english/advisories/2009/3316(Third Party Advisory)
https://bugs.launchpad.net/bugs/cve/2009-1895(Third Party Advisory)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11768(Third Party Advisory)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7826(Third Party Advisory)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9453(Third Party Advisory)
https://rhn.redhat.com/errata/RHSA-2009-1540.html(Third Party Advisory)
https://rhn.redhat.com/errata/RHSA-2009-1550.html(Third Party Advisory)
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00166.html(Third Party Advisory)
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00223.html(Third Party Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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