UBUNTU-CVE-2017-15537

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    UBUNTU-CVE-2017-15537

    Published: 17 Oct 2017Last Modified: 22 Apr 2026
    Upstream:
    CVE-2017-15537

    Summary:

    Details: 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.

    References: https://ubuntu.com/security/CVE-2017-15537, http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=814fb7bb7db5433757d76f4c4502c96fc53b0b5e, http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5, https://github.com/torvalds/linux/commit/814fb7bb7db5433757d76f4c4502c96fc53b0b5e, https://ubuntu.com/security/notices/USN-3469-1, https://ubuntu.com/security/notices/USN-3469-2, https://ubuntu.com/security/notices/USN-3487-1, https://www.cve.org/CVERecord?id=CVE-2017-15537

    Affected packages

    Package

    Name: linux-lts-xenial

    Purl: pkg:deb/ubuntu/[email protected]~14.04.1?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.4.0-98.121~14.04.1

    Affected versions

    4.4.0-13.29~14.04.1
    4.4.0-14.30~14.04.2
    4.4.0-15.31~14.04.1
    4.4.0-18.34~14.04.1
    4.4.0-21.37~14.04.1
    4.4.0-22.39~14.04.1
    4.4.0-22.40~14.04.1
    4.4.0-24.43~14.04.1
    4.4.0-28.47~14.04.1
    4.4.0-31.50~14.04.1
    4.4.0-34.53~14.04.1
    4.4.0-36.55~14.04.1
    4.4.0-38.57~14.04.1
    4.4.0-42.62~14.04.1
    4.4.0-45.66~14.04.1
    4.4.0-47.68~14.04.1
    4.4.0-51.72~14.04.1
    4.4.0-53.74~14.04.1
    4.4.0-57.78~14.04.1
    4.4.0-59.80~14.04.1
    4.4.0-62.83~14.04.1
    4.4.0-63.84~14.04.2
    4.4.0-64.85~14.04.1
    4.4.0-66.87~14.04.1
    4.4.0-67.88~14.04.1
    4.4.0-70.91~14.04.1
    4.4.0-71.92~14.04.1
    4.4.0-72.93~14.04.1
    4.4.0-75.96~14.04.1
    4.4.0-78.99~14.04.2
    4.4.0-79.100~14.04.1
    4.4.0-81.104~14.04.1
    4.4.0-83.106~14.04.1
    4.4.0-87.110~14.04.1
    4.4.0-89.112~14.04.1
    4.4.0-91.114~14.04.1
    4.4.0-92.115~14.04.1
    4.4.0-93.116~14.04.1
    4.4.0-96.119~14.04.1
    4.4.0-97.120~14.04.1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
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