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RHEL 7 : kernel (RHSA-2020:5023)
medium Nessus Plugin ID 142709
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Synopsis
The remote Red Hat host is missing one or more security updates for kernel.Description
The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:5023 advisory.The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: buffer over write in vgacon_scroll (CVE-2020-14331)
* kernel: net-sysfs: *_queue_add_kobject refcount issue (CVE-2019-20811)
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):
* [OSP13,mlx5] SRIOV VF still sending traffic when PF is down (BZ#1733181)
* gpf panic in virtio_check_driver_offered_fxature+6 when running sg_inq on a dm map for a lost virtio_blk (BZ#1811893)
* GPF panic in qlt_free_session_done+626 (BZ#1826127)
* [ Brazos ] Core(s) per socket and Socket values are interchanged in lscpu output. (kernel) (BZ#1826306)
* megaraid Aero: call trace observed during reboots (BZ#1828312)
* Crash in mptscsih_io_done() due to buffer overrun in sense_buf_pool (BZ#1829803)
* The qedf driver fails to re-establish the online F/C port state when the downstream F/C port is toggled unless a LIP is forced (BZ#1836443)
* tcp_fragment() limit causes packet drop under normal TCP load (BZ#1847765)
* ip link command shows state as UNKNOWN for MACVLAN interface (BZ#1848950)
* Lenovo TS 7Z60 Cooper Lake: PCI BAR firmware bug (BZ#1849223)
* [RHEL-7/mlx4] ipoib_flush ipoib_ib_dev_flush_light [ib_ipoib] (BZ#1858707)
* Uprobes crashes processes under GDB - SIGTRAP and SIGSEGV (BZ#1861396)
* kernel-3.10.0-1127.19.1.el7.x86_64 crashes after an SSH connection attempt when running as a Xen PV guest on AMD Epyc Rome (BZ#1882468)
* Null ptr deref after nf_reinject->nf_queue_entry_release_refs hits Attempt to release error doing inet_sock_destruct() (BZ#1885682)
Users of kernel are advised to upgrade to these updated packages, which fix these bugs.
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.
Solution
Update the RHEL kernel package based on the guidance in RHSA-2020:5023.See Also
http://www.nessus.org/u?af1e42c8
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/errata/RHSA-2020:5023
Plugin Details
Severity: Medium
ID: 142709
File Name: redhat-RHSA-2020-5023.nasl
Version: 1.13
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 11/11/2020
Updated: 11/7/2024
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
Vendor
Vendor Severity: Moderate
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 5.6
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2020-14331
CVSS v3
Risk Factor: Medium
Base Score: 6.6
Temporal Score: 5.9
Vector: CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:bpftool, p-cpe:/a:redhat:enterprise_linux:kernel-tools, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs-devel, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-kdump, p-cpe:/a:redhat:enterprise_linux:kernel-bootwrapper, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs, p-cpe:/a:redhat:enterprise_linux:python-perf, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel, p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:perf
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 11/10/2020
Vulnerability Publication Date: 6/3/2020
Reference Information
CVE: CVE-2019-20811, CVE-2020-14331