CVE-2009-1895

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Summary

CVECVE-2009-1895
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2009-07-16 15:30:00 UTC
Updated2026-04-23 00:35:47 UTC
DescriptionThe 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).

Risk And Classification

Primary CVSS: v2.0 7.2 from [email protected]

AV:L/AC:L/Au:N/C:C/I:C/A:C

Problem Types: CWE-16 | n/a

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:L/AC:L/Au:N/C:C/I:C/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 6.06 All All All
Operating System Canonical Ubuntu Linux 8.04 All All All
Operating System Canonical Ubuntu Linux 8.10 All All All
Operating System Canonical Ubuntu Linux 9.04 All All All
Operating System Debian Debian Linux 4.0 All All All
Operating System Debian Debian Linux 5.0 All All All
Operating System Linux Linux Kernel 2.6.31 rc1 All All
Operating System Linux Linux Kernel 2.6.31 rc2 All All
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
rhn.redhat.com | Red Hat Support af854a3a-2127-422b-91ae-364da2661108 rhn.redhat.com Third Party Advisory
Webmail : Solution de messagerie professionnelle - OVHcloud- OVH af854a3a-2127-422b-91ae-364da2661108 www.vupen.com Third Party Advisory
[SECURITY] Fedora 11 Update: kernel-2.6.29.6-217.2.3.fc11 af854a3a-2127-422b-91ae-364da2661108 www.redhat.com Third Party Advisory
www.osvdb.org/55807 af854a3a-2127-422b-91ae-364da2661108 www.osvdb.org Broken Link
Debian -- Security Information -- DSA-1845-1 linux-2.6 af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
Red Hat update for kernel - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
Repository / Oval Repository af854a3a-2127-422b-91ae-364da2661108 oval.cisecurity.org Third Party Advisory
Support af854a3a-2127-422b-91ae-364da2661108 www.redhat.com Third Party Advisory
[1/1] personality handling: fix PER_CLEAR_ON_SETID for security reasons - Patchwork af854a3a-2127-422b-91ae-364da2661108 patchwork.kernel.org Patch, Vendor Advisory
CVE-2009-1895 af854a3a-2127-422b-91ae-364da2661108 bugs.launchpad.net Third Party Advisory
Support af854a3a-2127-422b-91ae-364da2661108 www.redhat.com Third Party Advisory
wiki.rpath.com/Advisories:rPSA-2009-0111 af854a3a-2127-422b-91ae-364da2661108 wiki.rpath.com Third Party Advisory
Debian update for linux-2.6.24 - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
VMware ESX and vMA Update for Multiple Packages - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
Debian -- Security Information -- DSA-1844-1 linux-2.6.24 af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree af854a3a-2127-422b-91ae-364da2661108 git.kernel.org
Linux Kernel 'PER_CLEAR_ON_SETID' Incomplete Personality List Access Validation Weakness af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
SecurityFocus af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
[SECURITY] Fedora 10 Update: kernel-2.6.27.29-170.2.78.fc10 af854a3a-2127-422b-91ae-364da2661108 www.redhat.com Third Party Advisory
Ubuntu update for kernel - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
Repository / Oval Repository af854a3a-2127-422b-91ae-364da2661108 oval.cisecurity.org Third Party Advisory
SecurityFocus af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Repository / Oval Repository af854a3a-2127-422b-91ae-364da2661108 oval.cisecurity.org Third Party Advisory
Fedora update for kernel - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
Linux Kernel "PER_CLEAR_ON_SETID" Security Issue - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 rhn.redhat.com Third Party Advisory
VMSA-2009-0016.1 af854a3a-2127-422b-91ae-364da2661108 www.vmware.com Third Party Advisory
Webmail - OVH af854a3a-2127-422b-91ae-364da2661108 www.vupen.com Patch, Third Party Advisory
Red Hat update for kernel - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
cr0 blog: Bypassing Linux' NULL pointer dereference exploit prevention (mmap_min_addr) af854a3a-2127-422b-91ae-364da2661108 blog.cr0.org Patch, Third Party Advisory
Debian update for linux-2.6 - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
USN-807-1: Linux kernel vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Third Party Advisory
mandriva.com af854a3a-2127-422b-91ae-364da2661108 www.mandriva.com Third Party Advisory
SecurityFocus af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
404: File not found af854a3a-2127-422b-91ae-364da2661108 www.kernel.org Vendor Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree MITRE git.kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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