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    CVE-2017-7889

    The mm subsystem in the Linux kernel through 3.2 does not properly enforce the CONFIG_STRICT_DEVMEM protection mechanism, which allows local users to read or write to kernel memory locations in the first megabyte (and bypass slab-allocation access restrictions) via an application that opens the /dev/mem file, related to arch/x86/mm/init.c and drivers/char/mem.c.

    Published:Apr 5, 2017
    Last Modified:Apr 20, 2025
    EPS:Apr 17, 2017
    EPSS Score:0.00033
    CVSS Score:7.8

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Mrg
    Vendor
    Redhat
    Product
    Rhel Extras Rt

    Exploits

    No exploit reference

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    References

    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a4866aa812518ed1a37d8ea0c881dc946409de94
    http://www.debian.org/security/2017/dsa-3945
    http://www.openwall.com/lists/oss-security/2017/04/16/4
    http://www.securityfocus.com/bid/97690
    https://access.redhat.com/errata/RHSA-2017:1842
    https://access.redhat.com/errata/RHSA-2017:2077
    https://access.redhat.com/errata/RHSA-2017:2669
    https://access.redhat.com/errata/RHSA-2018:1854
    https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=b8f254aa17f720053054c4ecff3920973a83b9d6
    https://github.com/torvalds/linux/commit/a4866aa812518ed1a37d8ea0c881dc946409de94
    https://usn.ubuntu.com/3583-1/
    https://usn.ubuntu.com/3583-2/
    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a4866aa812518ed1a37d8ea0c881dc946409de94
    http://www.debian.org/security/2017/dsa-3945
    http://www.openwall.com/lists/oss-security/2017/04/16/4
    http://www.securityfocus.com/bid/97690
    https://access.redhat.com/errata/RHSA-2017:1842
    https://access.redhat.com/errata/RHSA-2017:2077
    https://access.redhat.com/errata/RHSA-2017:2669
    https://access.redhat.com/errata/RHSA-2018:1854
    https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=b8f254aa17f720053054c4ecff3920973a83b9d6
    https://github.com/torvalds/linux/commit/a4866aa812518ed1a37d8ea0c881dc946409de94
    https://usn.ubuntu.com/3583-1/
    https://usn.ubuntu.com/3583-2/

    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