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CVE-2009-0834

14
FAUCET Score

CVE-2009-0834 describes a vulnerability in the Linux kernel (versions 2.6.28.7 and earlier on x86_64 platforms) where the audit_syscall_entry function improperly handles mixed-mode syscalls (32-bit processes making 64-bit calls or vice-versa), affecting various Linux distributions including Canonical, Debian, and Red Hat. This allows local users to bypass syscall audit configurations. The vulnerability has a CVSS score of 3.6, indicating low severity with local access, low attack complexity, and potential for partial confidentiality and integrity impact. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.28.7CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*
7.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:7.10:*:*:*:*:*:*:*
8.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:*

CVSS Data

CVSS version used by this source: 2.0

3.6LOW

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.44%
Probability of exploitation in next 30 days
EPSS Percentile
36.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0044 is in the 67th percentile among its peer group of 2,096 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.6 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: MRG for RHEL-5Fixed in: kernel-rt-0:2.6.24.7-111.el5rt
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: kernel-0:2.6.9-78.0.22.EL
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel-0:2.6.18-128.1.10.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5.2 Z StreamFixed in: kernel-0:2.6.18-92.1.35.el5
View patch

Vendor Advisories (1)

redhatCVE-2009-0834Important

kernel: x86-64: syscall-audit: 32/64 syscall hole

Feb 27, 2009

References

git.kernel.org
lists.opensuse.org / opensuse-security-announce/2009-05/msg00002.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2009-06/msg00000.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2009-06/msg00001.html
Mailing ListThird Party Advisory
marc.info
Third Party Advisory
marc.info
Third Party Advisory
marc.info
Third Party Advisory
rhn.redhat.com / errata/RHSA-2009-0459.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2009-0473.html
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
scary.beasts.org / security/CESA-2009-001.html
Third Party Advisory
secunia.com / advisories/34084
Third Party Advisory
secunia.com / advisories/34917
Third Party Advisory
secunia.com / advisories/34962
Third Party Advisory
secunia.com / advisories/34981
Third Party Advisory
secunia.com / advisories/35011
Third Party Advisory
secunia.com / advisories/35015
Third Party Advisory
secunia.com / advisories/35120
Third Party Advisory
secunia.com / advisories/35121
Third Party Advisory
secunia.com / advisories/35185
Third Party Advisory
secunia.com / advisories/35390
Third Party Advisory
secunia.com / advisories/35394
Third Party Advisory
secunia.com / advisories/37471
Third Party Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/49061
Third Party AdvisoryVDB Entry
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8508
Third Party Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9600
Third Party Advisory
wiki.rpath.com / Advisories:rPSA-2009-0084
Broken Link
debian.org / security/2009/dsa-1787
Third Party Advisory
debian.org / security/2009/dsa-1794
Third Party Advisory
debian.org / security/2009/dsa-1800
Third Party Advisory
mandriva.com / security/advisories
Third Party Advisory
redhat.com / support/errata/RHSA-2009-0451.html
Third Party Advisory
securityfocus.com / archive/1/503610/100/0/threaded
Third Party AdvisoryVDB Entry
securityfocus.com / archive/1/507985/100/0/threaded
Third Party AdvisoryVDB Entry
securityfocus.com / bid/33951
Third Party AdvisoryVDB Entry
securitytracker.com / id
Third Party AdvisoryVDB Entry
ubuntu.com / usn/usn-751-1
Third Party Advisory
vmware.com / security/advisories/VMSA-2009-0016.html
Third Party Advisory
vupen.com / english/advisories/2009/3316
Third Party Advisory