high
7.8
CWE
416
Advisory Published
CVE Published
Updated

CVE-2017-15115: Use After Free

First published: Wed Nov 15 2017(Updated: )

It was found that in Linux kernel when peeling off an association to the socket in another network namespace, all transports in this association are not to be rehashed and keep use the old key in hashtable. A kernel would miss removing transports from hashtable when closing the socket and all transports are being freed. Later on a use-after-free issue could be caused when looking up an association and dereferencing the transports. References: <a href="https://patchwork.ozlabs.org/patch/827077/">https://patchwork.ozlabs.org/patch/827077/</a> <a href="http://seclists.org/oss-sec/2017/q4/282">http://seclists.org/oss-sec/2017/q4/282</a> An upstream patch: <a href="https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=df80cd9b28b9ebaa284a41df611dbf3a2d05ca74">https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=df80cd9b28b9ebaa284a41df611dbf3a2d05ca74</a>

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Linux Kernel<3.2.96
Linux Kernel>=3.3<3.16.51
Linux Kernel>=3.17<3.18.84
Linux Kernel>=3.19<4.1.47
Linux Kernel>=4.2<4.4.100
Linux Kernel>=4.5<4.9.65
Linux Kernel>=4.10<4.13.16
Debian Linux=7.0
SUSE Linux Enterprise Server=11-sp4
Ubuntu=12.04
Ubuntu=14.04
Ubuntu=16.04
Ubuntu=17.10
debian/linux
5.10.223-1
5.10.234-1
6.1.129-1
6.1.133-1
6.12.21-1
6.12.22-1

Remedy

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=df80cd9b28b9ebaa284a41df611dbf3a2d05ca74

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=1513345

Remedy

https://github.com/torvalds/linux/commit/df80cd9b28b9ebaa284a41df611dbf3a2d05ca74

Remedy

https://patchwork.ozlabs.org/patch/827077/

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-2017-15115?

    CVE-2017-15115 has a medium severity level due to the potential for unintended data exposure related to socket associations.

  • How do I fix CVE-2017-15115?

    To mitigate CVE-2017-15115, you should upgrade your Linux kernel to version 5.10.223-1 or later, or apply the relevant patches provided by your distribution.

  • Which versions of Linux are affected by CVE-2017-15115?

    CVE-2017-15115 affects multiple versions of the Linux kernel, specifically versions prior to 5.10.223-1 and various earlier versions between 3.x and 4.x.

  • Is CVE-2017-15115 exploitable remotely?

    CVE-2017-15115 is not considered remotely exploitable as it requires local access to the system, affecting only users with elevated privileges.

  • What types of network issues could CVE-2017-15115 cause?

    CVE-2017-15115 may lead to inconsistent socket behavior and could potentially allow for unauthorized data retention in some network namespaces.

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