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    CVE-2015-8970

    crypto/algif_skcipher.c in the Linux kernel before 4.4.2 does not verify that a setkey operation has been performed on an AF_ALG socket before an accept system call is processed, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted application that does not supply a key, related to the lrw_crypt function in crypto/lrw.c.

    Published:Dec 17, 2015
    Last Modified:Apr 12, 2025
    EPS:Nov 28, 2016
    EPSS Score:0.00038
    CVSS Score:5.5

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Mrg
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Extras Rt

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dd504589577d8e8e70f51f997ad487a4cb6c026f
    http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.2
    http://www.openwall.com/lists/oss-security/2016/11/04/3
    http://www.securityfocus.com/bid/94217
    https://access.redhat.com/errata/RHSA-2017:1842
    https://access.redhat.com/errata/RHSA-2017:2077
    https://access.redhat.com/errata/RHSA-2017:2437
    https://access.redhat.com/errata/RHSA-2017:2444
    https://bugzilla.redhat.com/show_bug.cgi?id=1386286
    https://github.com/torvalds/linux/commit/dd504589577d8e8e70f51f997ad487a4cb6c026f
    https://groups.google.com/forum/#%21msg/syzkaller/frb2XrB5aWk/xCXzkIBcDAAJ
    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dd504589577d8e8e70f51f997ad487a4cb6c026f
    http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.2
    http://www.openwall.com/lists/oss-security/2016/11/04/3
    http://www.securityfocus.com/bid/94217
    https://access.redhat.com/errata/RHSA-2017:1842
    https://access.redhat.com/errata/RHSA-2017:2077
    https://access.redhat.com/errata/RHSA-2017:2437
    https://access.redhat.com/errata/RHSA-2017:2444
    https://bugzilla.redhat.com/show_bug.cgi?id=1386286
    https://github.com/torvalds/linux/commit/dd504589577d8e8e70f51f997ad487a4cb6c026f
    https://groups.google.com/forum/#%21msg/syzkaller/frb2XrB5aWk/xCXzkIBcDAAJ

    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