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    CVE-2019-19602

    fpregs_state_valid in arch/x86/include/asm/fpu/internal.h in the Linux kernel before 5.4.2, when GCC 9 is used, allows context-dependent attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact because of incorrect fpu_fpregs_owner_ctx caching, as demonstrated by mishandling of signal-based non-cooperative preemption in Go 1.14 prereleases on amd64, aka CID-59c4bd853abc.

    Published:Nov 26, 2019
    Last Modified:Nov 21, 2024
    EPS:Dec 5, 2019
    EPSS Score:0.00038
    CVSS Score:6.1

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=59c4bd853abcea95eccc167a7d7fd5f1a5f47b98https://github.com/torvalds/linux/commit/59c4bd853abcea95eccc167a7d7fd5f1a5f47b98https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=59c4bd853abcea95eccc167a7d7fd5f1a5f47b98https://github.com/torvalds/linux/commit/59c4bd853abcea95eccc167a7d7fd5f1a5f47b98

    Related CVEs

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    References

    https://bugzilla.kernel.org/show_bug.cgi?id=205663
    https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2
    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=59c4bd853abcea95eccc167a7d7fd5f1a5f47b98
    https://github.com/golang/go/issues/35777#issuecomment-561935388
    https://github.com/torvalds/linux/commit/59c4bd853abcea95eccc167a7d7fd5f1a5f47b98
    https://security.netapp.com/advisory/ntap-20200103-0001/
    https://usn.ubuntu.com/4284-1/
    https://bugzilla.kernel.org/show_bug.cgi?id=205663
    https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2
    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=59c4bd853abcea95eccc167a7d7fd5f1a5f47b98
    https://github.com/golang/go/issues/35777#issuecomment-561935388
    https://github.com/torvalds/linux/commit/59c4bd853abcea95eccc167a7d7fd5f1a5f47b98
    https://security.netapp.com/advisory/ntap-20200103-0001/
    https://usn.ubuntu.com/4284-1/

    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