The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:1479 advisory.

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

    Security Fix(es):

    * An integer overflow flaw was found in the way the Linux kernel's networking subsystem processed TCP     Selective Acknowledgment (SACK) segments. While processing SACK segments, the Linux kernel's socket buffer     (SKB) data structure becomes fragmented. Each fragment is about TCP maximum segment size (MSS) bytes. To     efficiently process SACK blocks, the Linux kernel merges multiple fragmented SKBs into one, potentially     overflowing the variable holding the number of segments. A remote attacker could use this flaw to crash     the Linux kernel by sending a crafted sequence of SACK segments on a TCP connection with small value of     TCP MSS, resulting in a denial of service (DoS). (CVE-2019-11477)

    * kernel: lack of check for mmap minimum address in expand_downwards in mm/mmap.c leads to NULL pointer     dereferences exploit on non-SMAP platforms (CVE-2019-9213)

    * Kernel: tcp: excessive resource consumption while processing SACK blocks allows remote denial of service     (CVE-2019-11478)

    * Kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of     service (CVE-2019-11479)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Bug Fix(es):

    * [HPE 8.0 Bug] nvme drive power button does not turn off drive (BZ#1700288)

    * RHEL8.0 - hw csum failure seen in dmesg and console (using mlx5/mlx4/Mellanox) (BZ#1700289)

    * RHEL8.0 - vfio-ap: add subsystem to matrix device to avoid libudev failures (kvm) (BZ#1700290)

    * [FJ8.1 Bug]: Make Fujitsu Erratum 010001 patch work on A64FX v1r0 (BZ#1700901)

    * [FJ8.0 Bug]: Fujitsu A64FX processor errata - panic by unknown fault (BZ#1700902)

    * RHEL 8.0 Snapshot 4 - nvme create-ns command hangs after creating 20 namespaces on Bolt (NVMe)     (BZ#1701140)

    * [Cavium/Marvell 8.0 qed] Fix qed_mcp_halt() and qed_mcp_resume() (backporting bug) (BZ#1704184)

    * [Intel 8.1 Bug] PBF: Base frequency display fix (BZ#1706739)

    * [RHEL8]read/write operation not permitted to /sys/kernel/debug/gcov/reset (BZ#1708100)

    * RHEL8.0 - ISST-LTE:pVM:fleetwood:LPM:raylp85:After lpm seeing the  console logs on the the lpar at     target side (BZ#1708102)

    * RHEL8.0 - Backport support for software count cache flush Spectre v2 mitigation (BZ#1708112)

    * [Regression] RHEL8.0 - System crashed with one stress-ng-mremap stressor on Boston (kvm host)     (BZ#1708617)

    * [intel ice Rhel 8 RC1] ethtool -A ethx causes interfaces to go down (BZ#1709433)

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 8 : kernel (RHSA-2019:1479)

high Nessus Plugin ID 125967

Version 1.12

Version 1.10

Version 1.12 Nov 7, 2024, 2:42 AM CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Plugin metadata Plugin Feed: 202411070242
Version 1.10 Dec 6, 2022, 1:01 AM Reference Plugin Feed: 202212060101