CVE-2009-1895: canonical ubuntu_linux Configuration

Modified

Published 16-07-2009Last modified 07-08-2024

Vulnerability summary

CVE-2009-1895 is a high (CVSS 7.2) Configuration vulnerability in canonical ubuntu_linux. EPSS estimates a 0.44% chance of exploitation in the next 30 days, higher than 38.2% of scored vulnerabilities.

Priority

Routine

Not severe (CVSS 7.2, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

7.2/10

010

High · v2.0 (NVD)

EPSS score

0.44%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7

DSA-1844-1 DSA-1845-1 RHSA-2009:1193 RHSA-2009:1438 RHSA-2009:1540 RHSA-2009:1550+1 more

Timeline

16-07-2009
PublishedVulnerability first disclosed.
07-08-2024
Last modifiedVulnerability information updated.

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).

CVSS metrics

1 score · 1 source · 1 version

v2.07.2

EPSS trend

Probability

0.44%

Chance of exploitation in the next 30 days

Percentile

38%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.44% on 05-10-2026

05-10-202604-11-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-16ConfigurationWeaknesses in this category are typically introduced during the configuration of the software.

Affected systems

Version check

Known conditions: local access, no authentication (CVSS vector). Other conditions: not stated in public data.

Canonical1 product

ubuntu_linuxEOL6.06 | 8.04 | 8.10 | 9.04

Debian1 product

debian_linuxEOL4.0 | 5.0

Linux1 product

linux_kernel≤ 2.6.31 | 2.6.31:rc1 | 2.6.31:rc2

3 vendors · 3 products

References

35 links

www.securityfocus.com/archive/1/512019/100/0/threadedMailing ListX Refsource BUGTRAQThird Party AdvisoryVDB Entry
wiki.rpath.com/Advisories:rPSA-2009-0111X Refsource CONFIRMThird Party Advisory
secunia.com/advisories/36131Third Party AdvisoryX Refsource SECUNIA
www.osvdb.org/55807VDB EntryX Refsource OSVDBBroken Link
www.vupen.com/english/advisories/2009/1866VDB EntryX Refsource VUPENPatchThird Party Advisory
rhn.redhat.com/errata/RHSA-2009-1540.htmlVendor AdvisoryX Refsource REDHATThird Party Advisory
secunia.com/advisories/37471Third Party AdvisoryX Refsource SECUNIA
secunia.com/advisories/36759Third Party AdvisoryX Refsource SECUNIA
www.redhat.com/archives/fedora-package-announce/2009-August/msg00223.htmlVendor AdvisoryX Refsource FEDORAThird Party Advisory
www.debian.org/security/2009/dsa-1844Vendor AdvisoryX Refsource DEBIANThird Party Advisory

Show all 35 references

www.ubuntu.com/usn/usn-807-1Vendor AdvisoryX Refsource UBUNTUThird Party Advisory
www.vmware.com/security/advisories/VMSA-2009-0016.htmlX Refsource CONFIRMThird Party Advisory
www.redhat.com/support/errata/RHSA-2009-1193.htmlVendor AdvisoryX Refsource REDHATThird Party Advisory
git.kernel.orgX Refsource CONFIRM
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7826VDB EntrySignatureX Refsource OVALThird Party Advisory
www.securityfocus.com/bid/35647VDB EntryX Refsource BIDThird Party Advisory
www.redhat.com/archives/fedora-package-announce/2009-August/msg00166.htmlVendor AdvisoryX Refsource FEDORAThird Party Advisory
www.securityfocus.com/archive/1/505254/100/0/threadedMailing ListX Refsource BUGTRAQThird Party AdvisoryVDB Entry
blog.cr0.org/2009/06/bypassing-linux-null-pointer.htmlX Refsource MISCPatchThird Party Advisory
www.mandriva.com/security/advisories?name=MDVSA-2011:051Vendor AdvisoryX Refsource MANDRIVAThird Party Advisory
www.securityfocus.com/archive/1/507985/100/0/threadedMailing ListX Refsource BUGTRAQThird Party AdvisoryVDB Entry
secunia.com/advisories/36051Third Party AdvisoryX Refsource SECUNIA
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11768VDB EntrySignatureX Refsource OVALThird Party Advisory
secunia.com/advisories/36045Third Party AdvisoryX Refsource SECUNIA
secunia.com/advisories/36116Third Party AdvisoryX Refsource SECUNIA
rhn.redhat.com/errata/RHSA-2009-1550.htmlVendor AdvisoryX Refsource REDHATThird Party Advisory
patchwork.kernel.org/patch/32598/X Refsource CONFIRMPatchVendor Advisory
www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc3X Refsource CONFIRMVendor Advisory
secunia.com/advisories/35801Third Party AdvisoryX Refsource SECUNIA
secunia.com/advisories/36054Third Party AdvisoryX Refsource SECUNIA
bugs.launchpad.net/bugs/cve/2009-1895X Refsource CONFIRMThird Party Advisory
www.debian.org/security/2009/dsa-1845Vendor AdvisoryX Refsource DEBIANThird Party Advisory
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9453VDB EntrySignatureX Refsource OVALThird Party Advisory
www.redhat.com/support/errata/RHSA-2009-1438.htmlVendor AdvisoryX Refsource REDHATThird Party Advisory
www.vupen.com/english/advisories/2009/3316VDB EntryX Refsource VUPENThird Party Advisory