The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:0386 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * Linux kernel built with the Kernel-based Virtual Machine (CONFIG_KVM) support is vulnerable to a null     pointer dereference flaw. It could occur on x86 platform, when emulating an undefined instruction. An     attacker could use this flaw to crash the host kernel resulting in DoS. (CVE-2016-8630, Important)

    * A race condition issue leading to a use-after-free flaw was found in the way the raw packet sockets     implementation in the Linux kernel networking subsystem handled synchronization while creating the     TPACKET_V3 ring buffer. A local user able to open a raw packet socket (requires the CAP_NET_RAW     capability) could use this flaw to elevate their privileges on the system. (CVE-2016-8655, Important)

    * A flaw was discovered in the Linux kernel's implementation of VFIO. An attacker issuing an ioctl can     create a situation where memory is corrupted and modify memory outside of the expected area. This may     overwrite kernel memory and subvert kernel execution. (CVE-2016-9083, Important)

    * The use of a kzalloc with an integer multiplication allowed an integer overflow condition to be reached     in vfio_pci_intrs.c. This combined with CVE-2016-9083 may allow an attacker to craft an attack and use     unallocated memory, potentially crashing the machine. (CVE-2016-9084, Moderate)

    Red Hat would like to thank Philip Pettersson for reporting CVE-2016-8655.

    Additional Changes:

    Space precludes documenting all of the bug fixes and enhancements included in this advisory. To see the     complete list of bug fixes and enhancements, refer to the following KnowledgeBase article:
    https://access.redhat.com/articles/2940041.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

Analytics

RHEL 7 : kernel (RHSA-2017:0386)

high Nessus Plugin ID 97509

Version 3.14