CVE-2018-1091

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    CVE-2018-1091

    Published: 27 Mar 2018Last Modified: 15 Mar 2026

    Summary:

    Details: In the flush_tmregs_to_thread function in arch/powerpc/kernel/ptrace.c in the Linux kernel before 4.13.5, a guest kernel crash can be triggered from unprivileged userspace during a core dump on a POWER host due to a missing processor feature check and an erroneous use of transactional memory (TM) instructions in the core dump path, leading to a denial of service.

    References: http://openwall.com/lists/oss-security/2018/03/27/4, https://access.redhat.com/errata/RHSA-2018:1318, https://access.redhat.com/security/cve/cve-2018-1091, https://bugzilla.redhat.com/show_bug.cgi?id=1558149, https://marc.info/?l=linuxppc-embedded&m=150535531910494&w=2, https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5, http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1fa0768a8713b135848f78fd43ffc208d8ded70, https://github.com/torvalds/linux/commit/c1fa0768a8713b135848f78fd43ffc208d8ded70

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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
    CVE-2018-1091 | CVE-DB