Is CVE-2017-15129 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 0%.

What products does CVE-2017-15129 affect?

Tracked products affected include Ubuntu. Check the version you run to see whether it is affected.

How do I fix CVE-2017-15129?

Apply the vendor fix in your normal patch cycle. An official patch or advisory is available. Upgrade affected products to a fixed version.

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CVE-2017-15129

Q: What is CVE-2017-15129?

CVE-2017-15129 is a medium-severity software vulnerability (CWE-362) with a CVSS score of 4.7. 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 net

MEDIUM severity · CVSS 4.7 · CWE-362

4.7CVSS MEDIUM

Summary

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.

Impact & exploitability

Attack vectorLocal

Attack complexityHigh

Privileges requiredLow

User interactionNone

Confidentiality impactNone

Integrity impactNone

Availability impactHigh

Exploit probability (EPSS)0%

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

Affected products we track (1)

Ubuntu

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=21b5944350052d2583e82dd59b19a9ba94a007f0 ↗

CVE-2017-15129

Summary

Impact & exploitability

Affected products we track (1)

Recommendation

Additional information