CVE-2017-15129
MEDIUMCVSS 4.7/10EPSS 0.36%
Last modified
CVE-2017-15129 is a medium-severity vulnerability rated 4.7/10 on the CVSS scale. A use-after-free vulnerability was found in network namespaces code affecting the Linux kernel before 4.14.11. The function get_net_ns_by_id() in net/core/net_namespace.c does not check for the net::count value after it has found a peer network in netns_ids idr, which could lead to double free and memory corruption. EPSS estimates a 0.36% chance of exploitation in the next 30 days.
Description
A use-after-free vulnerability was found in network namespaces code affecting the Linux kernel before 4.14.11. The function get_net_ns_by_id() in net/core/net_namespace.c does not check for the net::count value after it has found a peer network in netns_ids idr, which could lead to double free and memory corruption. This vulnerability could allow an unprivileged local user to induce kernel memory corruption on the system, leading to a crash. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although it is thought to be unlikely.
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 4.0, < 4.14.11 | — |
| Linux | Linux Kernel | 4.15 | Rc1 |
| Fedoraproject | Fedora | 27 | — |
| Canonical | Ubuntu Linux | 14.04 | — |
| Canonical | Ubuntu Linux | 16.04 | — |
| Canonical | Ubuntu Linux | 17.10 | — |
| Redhat | Enterprise Linux | 7.0 | — |
| Redhat | Enterprise Linux Compute Node Eus | 7.4 | — |
| Redhat | Enterprise Linux Desktop | 7.0 | — |
| Redhat | Enterprise Linux Eus | 7.4 | — |
| Redhat | Enterprise Linux Eus | 7.6 | — |
| Redhat | Enterprise Linux Eus | 7.7 | — |
| Redhat | Enterprise Linux For Ibm Z Systems | 7.0 | — |
| Redhat | Enterprise Linux For Ibm Z Systems Eus | 7.4 | — |
| Redhat | Enterprise Linux For Power Big Endian | 7.0 | — |
| Redhat | Enterprise Linux For Power Big Endian Eus | 7.4 | — |
| Redhat | Enterprise Linux For Power Little Endian Eus | 7.4 | — |
| Redhat | Enterprise Linux For Real Time | 7.0 | — |
| Redhat | Enterprise Linux For Real Time For Nfv | 7 | — |
| Redhat | Enterprise Linux For Scientific Computing | 7.0 | — |
| Redhat | Enterprise Linux Server | 7.0 | — |
| Redhat | Enterprise Linux Server Aus | 7.4 | — |
| Redhat | Enterprise Linux Server Tus | 7.4 | — |
| Redhat | Enterprise Linux Server Tus | 7.6 | — |
| Redhat | Enterprise Linux Server Tus | 7.7 | — |
| Redhat | Enterprise Linux Server Update Services For Sap Solutions | 7.4 | — |
| Redhat | Enterprise Linux Workstation | 7.0 | — |
References
- http://seclists.org/oss-sec/2018/q1/7Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/102485Broken Link
- https://access.redhat.com/errata/RHSA-2018:0654Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:0676Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:1062Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1946Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2017-15129Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1531174Issue Tracking, Patch, Third Party Advisory
- https://marc.info/?l=linux-netdev&m=151370451121029&w=2Mailing List, Patch, Third Party Advisory
- https://marc.info/?t=151370468900001&r=1&w=2Mailing List, Third Party Advisory
- https://usn.ubuntu.com/3617-1/Third Party Advisory
- https://usn.ubuntu.com/3617-2/Third Party Advisory
- https://usn.ubuntu.com/3617-3/Third Party Advisory
- https://usn.ubuntu.com/3619-1/Third Party Advisory
- https://usn.ubuntu.com/3619-2/Third Party Advisory
- https://usn.ubuntu.com/3632-1/Third Party Advisory
- http://seclists.org/oss-sec/2018/q1/7Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/102485Broken Link
- https://access.redhat.com/errata/RHSA-2018:0654Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:0676Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:1062Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1946Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2017-15129Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1531174Issue Tracking, Patch, Third Party Advisory
- https://marc.info/?l=linux-netdev&m=151370451121029&w=2Mailing List, Patch, Third Party Advisory
- https://marc.info/?t=151370468900001&r=1&w=2Mailing List, Third Party Advisory
- https://usn.ubuntu.com/3617-1/Third Party Advisory
- https://usn.ubuntu.com/3617-2/Third Party Advisory
- https://usn.ubuntu.com/3617-3/Third Party Advisory
- https://usn.ubuntu.com/3619-1/Third Party Advisory
- https://usn.ubuntu.com/3619-2/Third Party Advisory
- https://usn.ubuntu.com/3632-1/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2017-15129?
A use-after-free vulnerability was found in network namespaces code affecting the Linux kernel before 4.14.11. The function get_net_ns_by_id() in net/core/net_namespace.c does not check for the net::count value after it has found a peer network in netns_ids idr, which could lead to double free and memory corruption. This vulnerability could allow an unprivileged local user to induce kernel memory corruption on the system, leading to a crash. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although it is thought to be unlikely.
How severe is CVE-2017-15129?
CVE-2017-15129 has a CVSS score of 4.7/10 (MEDIUM severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.
How do I fix CVE-2017-15129?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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