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Vulnerability record · CVE-2017-15129 · published 9 January 2018

CVE-2017-15129: Linux kernel race condition vulnerability

Linux · Linux Kernel

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.

4.7 CVSS 3.1 Medium EPSS 0.36% · top 73.0% CWE-362 · Race condition
4.7CVSS 3.1 base score, v2 4.9
0.36%EPSS exploitation probability, 30 days
NoNot in CISA KEV
20Affected product versions listed by NVD
38References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

20 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=21b5944350052d2583e82dd59b19a9ba94a007f0 Patch
http://seclists.org/oss-sec/2018/q1/7 Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/102485 Broken Link
https://access.redhat.com/errata/RHSA-2018:0654 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0676 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1062 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1946 Third Party Advisory
https://access.redhat.com/security/cve/CVE-2017-15129 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1531174 Issue TrackingPatchThird Party Advisory
https://github.com/torvalds/linux/commit/21b5944350052d2583e82dd59b19a9ba94a007f0 Patch
https://marc.info/?l=linux-netdev&m=151370451121029&w=2 Mailing ListPatchThird Party Advisory
https://marc.info/?t=151370468900001&r=1&w=2 Mailing ListThird 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
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.11 Release Notes
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=21b5944350052d2583e82dd59b19a9ba94a007f0 Patch
http://seclists.org/oss-sec/2018/q1/7 Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/102485 Broken Link
https://access.redhat.com/errata/RHSA-2018:0654 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0676 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1062 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1946 Third Party Advisory
https://access.redhat.com/security/cve/CVE-2017-15129 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1531174 Issue TrackingPatchThird Party Advisory
https://github.com/torvalds/linux/commit/21b5944350052d2583e82dd59b19a9ba94a007f0 Patch
https://marc.info/?l=linux-netdev&m=151370451121029&w=2 Mailing ListPatchThird Party Advisory
https://marc.info/?t=151370468900001&r=1&w=2 Mailing ListThird 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
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.11 Release Notes

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Source: NIST National Vulnerability Database (record CVE-2017-15129), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.