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CVE-2017-15306

5.5 · MEDIUM

The kvm_vm_ioctl_check_extension function in arch/powerpc/kvm/powerpc.c in the Linux kernel before 4.13.11 allows local users to cause a denial of service (NULL pointer dereference and system crash…

Published Nov 6, 2017CWE-476EPSS 0.39%

Overview

CVE-2017-15306 is a medium-severity vulnerability. It was published on November 6, 2017 and has a CVSS 3.0 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

The kvm_vm_ioctl_check_extension function in arch/powerpc/kvm/powerpc.c in the Linux kernel before 4.13.11 allows local users to cause a denial of service (NULL pointer dereference and system crash) via a KVM_CHECK_EXTENSION KVM_CAP_PPC_HTM ioctl call to /dev/kvm.

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

Refgit.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ac64115a66c18c01745bbd3c47a36b124e5fd8c0Refopenwall.com/lists/oss-security/2017/11/06/6Refwww.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11Refwww.securityfocus.com/bid/101693GitHubgithub.com/torvalds/linux/commit/ac64115a66c18c01745bbd3c47a36b124e5fd8c0Refgit.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ac64115a66c18c01745bbd3c47a36b124e5fd8c0Refopenwall.com/lists/oss-security/2017/11/06/6Refwww.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11Refwww.securityfocus.com/bid/101693GitHubgithub.com/torvalds/linux/commit/ac64115a66c18c01745bbd3c47a36b124e5fd8c0

How CyberStrike helps

Frequently asked questions

What is CVE-2017-15306?

CVE-2017-15306 is a medium-severity vulnerability. It was published on November 6, 2017 and has a CVSS 3.0 base score of 5.5 (MEDIUM).

How severe is CVE-2017-15306?

This vulnerability has a CVSS 3.0 base score of 5.5, 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-2017-15306?

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-2017-15306?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-15306 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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