CVE-2019-16995 Denial of service in n/a

What is CVE-2019-16995?

CVE-2019-16995 is a high-severity denial of service vulnerability in Linux kernel, published on 30 Sep 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-401

Which versions are affected by CVE-2019-16995?

It affects 17 products.

Products include Linux kernel, Netapp Aff A700s Firmware, Netapp Data Availability Services, Netapp H300e Firmware, Netapp H300s Firmware, Netapp H410c Firmware and 11 more.

How do I fix CVE-2019-16995?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2019-16995 being exploited?

There is no known exploitation of CVE-2019-16995 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2019-16995, GHSA-m4c2-gjmw-g8gc, UBUNTU-CVE-2019-16995.