What’s Vulnerable › Vulnerabilities

CVE-2019-16995

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-09-30 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel before 5.0.3, a memory leak exits in hsr_dev_finalize() in net/hsr/hsr_device.c if hsr_add_port fails to add a port, which may cause denial of service, aka CID-6caabe7f197d.

Affected products

• Linux kernel: from 3.17 before 3.18.137; from 4.4 before 4.4.177; from 4.9 before 4.9.164; from 4.14 before 4.14.107; from 4.19 before 4.19.30; from 4.20 before 4.20.17 — fixed in 3.18.137, 4.14.107, 4.19.30, 4.20.17, 4.4.177, 4.9.164
• NetApp Aff A700S Firmware: all versions
• NetApp Data Availability Services: all versions
• NetApp H300E Firmware: all versions
• NetApp H300S Firmware: all versions
• NetApp H410C Firmware: all versions
• NetApp H410S Firmware: all versions
• NetApp H500E Firmware: all versions
• NetApp H500S Firmware: all versions
• NetApp H610S Firmware: all versions
• NetApp H700E Firmware: all versions
• NetApp H700S Firmware: all versions
• NetApp Hci Management Node: all versions
• NetApp, Inc. NetApp Service Processor: all versions
• NetApp Solidfire: all versions
• NetApp Steelstore Cloud Integrated Storage: all versions
• openSUSE Leap: 15.0, 15.1

How to fix

Upgrade to a fixed version: Linux kernel 3.18.137, 4.14.107, 4.19.30, 4.20.17. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00010.html
• http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00035.html
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.3
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6caabe7f197d3466d238f70915d65301f1716626
• https://github.com/torvalds/linux/commit/6caabe7f197d3466d238f70915d65301f1716626
• https://security.netapp.com/advisory/ntap-20191031-0005/
• http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00010.html
• http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00035.html
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.3
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6caabe7f197d3466d238f70915d65301f1716626
• https://github.com/torvalds/linux/commit/6caabe7f197d3466d238f70915d65301f1716626
• https://security.netapp.com/advisory/ntap-20191031-0005/

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