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CVE-2017-17053

7.0 · HIGH

The init_new_context function in arch/x86/include/asm/mmu_context.h in the Linux kernel before 4.12.10 does not correctly handle errors from LDT table allocation when forking a new process, allowin…

Published Nov 29, 2017CWE-416EPSS 0.38%

Overview

CVE-2017-17053 is a high-severity vulnerability. It was published on November 29, 2017 and has a CVSS 3.1 base score of 7.0 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

The init_new_context function in arch/x86/include/asm/mmu_context.h in the Linux kernel before 4.12.10 does not correctly handle errors from LDT table allocation when forking a new process, allowing a local attacker to achieve a use-after-free or possibly have unspecified other impact by running a specially crafted program. This vulnerability only affected kernels built with CONFIG_MODIFY_LDT_SYSCALL=y.

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=ccd5b3235180eef3cfec337df1c8554ab151b5ccRefwww.securityfocus.com/bid/102010Refaccess.redhat.com/errata/RHSA-2018:0676GitHubgithub.com/torvalds/linux/commit/ccd5b3235180eef3cfec337df1c8554ab151b5ccRefwww.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.12.10Refgit.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ccd5b3235180eef3cfec337df1c8554ab151b5ccRefwww.securityfocus.com/bid/102010Refaccess.redhat.com/errata/RHSA-2018:0676GitHubgithub.com/torvalds/linux/commit/ccd5b3235180eef3cfec337df1c8554ab151b5ccRefwww.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.12.10

How CyberStrike helps

Frequently asked questions

What is CVE-2017-17053?

CVE-2017-17053 is a high-severity vulnerability. It was published on November 29, 2017 and has a CVSS 3.1 base score of 7.0 (HIGH).

How severe is CVE-2017-17053?

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2017-17053?

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-2017-17053?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-17053 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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