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CVE-2019-19065

4.7 · MEDIUM

A memory leak in the sdma_init() function in drivers/infiniband/hw/hfi1/sdma.c in the Linux kernel before 5.3.9 allows attackers to cause a denial of service (memory consumption) by triggering rhas…

Published Nov 18, 2019CWE-401EPSS 0.49%

Overview

CVE-2019-19065 is a medium-severity vulnerability. It was published on November 18, 2019 and has a CVSS 3.1 base score of 4.7 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A memory leak in the sdma_init() function in drivers/infiniband/hw/hfi1/sdma.c in the Linux kernel before 5.3.9 allows attackers to cause a denial of service (memory consumption) by triggering rhashtable_init() failures, aka CID-34b3be18a04e. NOTE: This has been disputed as not a vulnerability because "rhashtable_init() can only fail if it is passed invalid values in the second parameter's struct, but when invoked from sdma_init() that is a pointer to a static const struct, so an attacker could only trigger failure if they could corrupt kernel memory (in which case a small memory leak is not a significant problem).

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reflists.opensuse.org/opensuse-security-announce/2019-12/msg00029.htmlRefcdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.9GitHubgithub.com/torvalds/linux/commit/34b3be18a04ecdc610aae4c48e5d1b799d8689f6Refsecurity.netapp.com/advisory/ntap-20191205-0001/Refusn.ubuntu.com/4208-1/Refusn.ubuntu.com/4210-1/Refusn.ubuntu.com/4226-1/Reflists.opensuse.org/opensuse-security-announce/2019-12/msg00029.htmlRefcdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.9GitHubgithub.com/torvalds/linux/commit/34b3be18a04ecdc610aae4c48e5d1b799d8689f6

How CyberStrike helps

Frequently asked questions

What is CVE-2019-19065?

CVE-2019-19065 is a medium-severity vulnerability. It was published on November 18, 2019 and has a CVSS 3.1 base score of 4.7 (MEDIUM).

How severe is CVE-2019-19065?

This vulnerability has a CVSS 3.1 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2019-19065?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-19065?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-19065 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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