FlawAtlas
Search the atlas
UBUNTU-CVE-2017-15537 Moderate

UBUNTU-CVE-2017-15537

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.

Exploit probability Not scored
Published October 17, 2017
Required by Not available
Last source change April 22, 2026

02 / AFFECTED SOFTWARE

Affected packages

Ubuntu:14.04:LTS linux-lts-xenial

40 explicit affected versions

Ubuntu:16.04:LTS linux

62 explicit affected versions

Ubuntu:16.04:LTS linux-aws

21 explicit affected versions

Ubuntu:16.04:LTS linux-azure

6 explicit affected versions

Ubuntu:16.04:LTS linux-gcp

5 explicit affected versions

Ubuntu:16.04:LTS linux-gke

18 explicit affected versions

Ubuntu:16.04:LTS linux-hwe

26 explicit affected versions

Ubuntu:16.04:LTS linux-kvm

3 explicit affected versions

Ubuntu:16.04:LTS linux-raspi2

38 explicit affected versions

Ubuntu:16.04:LTS linux-snapdragon

35 explicit affected versions

Ubuntu:20.04:LTS linux-azure-fde

26 explicit affected versions

Ubuntu:20.04:LTS linux-gke

51 explicit affected versions

Ubuntu:20.04:LTS linux-raspi2

6 explicit affected versions

Ubuntu:20.04:LTS linux-riscv

12 explicit affected versions

Ubuntu:22.04:LTS linux-intel-iot-realtime

1 explicit affected versions

Ubuntu:22.04:LTS linux-realtime

1 explicit affected versions

Ubuntu:22.04:LTS linux-riscv

23 explicit affected versions

Ubuntu:24.04:LTS linux-raspi-realtime

1 explicit affected versions

03 / CONNECTIONS

Connected vulnerabilities

related USN-3487-1

04 / EVIDENCE

Source records

Open Source Vulnerabilities UBUNTU-CVE-2017-15537

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.

View original source

05 / REFERENCES

Further evidence