CVE-2017-15537

Name: CVE-2017-15537
Creator: NVD / NIST
Published: 2017-10-17T18:29:00.197+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.40%

Last modified Jun 17, 2026

CVE-2017-15537 is a vulnerability of currently unknown severity. The x86/fpu (Floating Point Unit) subsystem in the Linux kernel before 4.13.5, when a processor supports the xsave feature but not the xsaves feature, does not correctly handle attempts to set reserved bits in the xstate header via the ptrace() or rt_sigreturn() system call, allowing local users to read the FPU registers of other processes on the system, related to arch/x86/kernel/fpu/regset.c and arch/x86/kernel/fpu/signal.c.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

Description

The x86/fpu (Floating Point Unit) subsystem in the Linux kernel before 4.13.5, when a processor supports the xsave feature but not the xsaves feature, does not correctly handle attempts to set reserved bits in the xstate header via the ptrace() or rt_sigreturn() system call, allowing local users to read the FPU registers of other processes on the system, related to arch/x86/kernel/fpu/regset.c and arch/x86/kernel/fpu/signal.c.

Metrics

EPSS Probability

0.40%

31.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	<= 4.13.4

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=814fb7bb7db5433757d76f4c4502c96fc53b0b5eIssue Tracking, Patch, Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5Release Notes, Vendor Advisory
https://github.com/torvalds/linux/commit/814fb7bb7db5433757d76f4c4502c96fc53b0b5eIssue Tracking, Patch, Third Party Advisory
https://source.android.com/security/bulletin/pixel/2018-01-01
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=814fb7bb7db5433757d76f4c4502c96fc53b0b5eIssue Tracking, Patch, Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5Release Notes, Vendor Advisory
https://github.com/torvalds/linux/commit/814fb7bb7db5433757d76f4c4502c96fc53b0b5eIssue Tracking, Patch, Third Party Advisory
https://source.android.com/security/bulletin/pixel/2018-01-01

Timeline

Published: Oct 17, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-15537?

How severe is CVE-2017-15537?

Severity scoring for CVE-2017-15537 is pending analysis. The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2017-15537?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-15537?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST