low
3.6
CWE
Advisory Published
CVE Published
Updated

CVE-2009-0834

First published: Mon Mar 02 2009(Updated: )

Description of problem: On x86-64, a 32-bit process (TIF_IA32) can switch to 64-bit mode with ljmp, and then use the "syscall" instruction to make a 64-bit system call. A 64-bit process make a 32-bit system call with int $0x80. In both these cases, audit_syscall_entry() will use the wrong system call number table and the wrong system call argument registers. This could be used to circumvent a syscall audit configuration that filters based on the syscall numbers or argument details. References: <a href="http://scary.beasts.org/security/CESA-2009-001.html">http://scary.beasts.org/security/CESA-2009-001.html</a> <a href="http://scary.beasts.org/security/CESA-2009-004.html">http://scary.beasts.org/security/CESA-2009-004.html</a> <a class="bz_bug_link bz_status_CLOSED bz_closed bz_public " title="CLOSED ERRATA - CVE-2009-0835 kernel: x86-64: seccomp: 32/64 syscall hole" href="show_bug.cgi?id=487255">https://bugzilla.redhat.com/show_bug.cgi?id=487255</a> <a href="http://lkml.org/lkml/2009/2/27/451">http://lkml.org/lkml/2009/2/27/451</a> summary <a href="http://lkml.org/lkml/2009/2/27/452">http://lkml.org/lkml/2009/2/27/452</a> syscall-audit

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Linux Kernel<=2.6.28.7
Debian Linux=4.0
Debian Linux=5.0
Ubuntu=7.10
Ubuntu=8.04
Ubuntu=8.10
Red Hat Enterprise Linux Desktop=4.0
Red Hat Enterprise Linux Desktop=5.0
Red Hat Enterprise Linux Server EUS=4.7
Red Hat Enterprise Linux Server EUS=5.3
Red Hat Enterprise Linux Server=4.0
Red Hat Enterprise Linux Server=5.0
Red Hat Enterprise Linux Server=5.3
Red Hat Enterprise Linux Workstation=4.0
Red Hat Enterprise Linux Workstation=5.0
openSUSE=10.3
openSUSE=11.0
SUSE Linux Enterprise Desktop=10-sp2
SUSE Linux Enterprise Server=10-sp2
SUSE Linux Enterprise Software Development Kit=10-sp2

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=487990

Remedy

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ccbe495caa5e604b04d5a31d7459a6f6a76a756c

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2009-0834?

    CVE-2009-0834 has been categorized as a low-severity vulnerability.

  • How do I fix CVE-2009-0834?

    To fix CVE-2009-0834, update your Linux kernel to a patched version beyond 2.6.28.7.

  • Which systems are affected by CVE-2009-0834?

    CVE-2009-0834 affects various versions of Linux kernels, Debian Linux versions 4.0 and 5.0, as well as specific Ubuntu and Red Hat versions.

  • What type of attack does CVE-2009-0834 facilitate?

    CVE-2009-0834 can potentially allow privilege escalation through improper handling of system calls.

  • Is there a workaround for CVE-2009-0834?

    Currently, the best workaround for CVE-2009-0834 is to apply the recommended patches available for your affected systems.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203