Detections
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RHEL 7 : kernel (RHSA-2020:2082)
high Nessus Plugin ID 136518
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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-2020:2082 advisory.The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c (CVE-2017-18595)
* kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c (CVE-2019-19768)
* Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic (CVE-2020-10711)
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):
* Delay in RT task scheduled. Incorrect nr_scheduled value. (BZ#1796262)
* ixgbevf interface goes down on hypervisor and causes outage (BZ#1796799)
* kernel: UAF in cdev_put() when a PTP device is removed while its chardev is open (BZ#1798396)
* [HPEMC RHEL 7.7 RHEL 7.8 REGRESSION] kernel not populating numa_nod in /sys/devices... for PMEM (BZ#1801699)
* Unable to exclude files from auditing (BZ#1806430)
* DNAT'd packet is not unmangled upon reply on openshift node (BZ#1806447)
* top shows super high loads when tuned profile realtime-virtual-host is applied (BZ#1808030)
* [RHEL 7.9] mdraid devices do not autocorrect read errors on parity blocks (BZ#1810062)
* Observed a memory leak while using dm-multipath (BZ#1812937)
* RHEL7.8: megaraid_sas: MSIx allocation fails in resume path (BZ#1813249)
* Backport: Guest microcode version mismatch on secondary processors (BZ#1814003)
* dm-multipath high load backport incorrect (BZ#1814537)
* qla2xxx: Urgent driver fix needed. Initiator does not relogin to target after receiving an explicit logout (BZ#1815596)
* Potential deadlock in iscsi_if_rx func (BZ#1817497)
* High iSCSI read latency resolved by 'tcp: implement coalescing on backlog queue' (BZ#1817499)
* kdump: crashkernel=xM,low is likely to fail when x is big enough (BZ#1817502)
* [RHEL7.8][Azure]Commits to resolve high network latency (BZ#1817935)
* net_sched: remove a bogus warning in hfsc (BZ#1821262)
* NETDEV WATCHDOG: enp3s0 (r8169): transmit queue 0 timed out (BZ#1822548)
* BUG: unable to handle kernel NULL pointer dereference at fl_dump (BZ#1824548)
* [ Marvell 7.9] update qla2xxx driver with critical bug fixes (BZ#1827274)
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-2020:2082.See Also
http://www.nessus.org/u?ce17a5c3
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/errata/RHSA-2020:2082
https://bugzilla.redhat.com/show_bug.cgi?id=1758671
Plugin Details
Severity: High
ID: 136518
File Name: redhat-RHSA-2020-2082.nasl
Version: 1.12
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 5/12/2020
Updated: 11/8/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
Vendor
Vendor Severity: Important
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 5.3
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2017-18595
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:bpftool, p-cpe:/a:redhat:enterprise_linux:kernel-tools, p-cpe:/a:redhat:enterprise_linux:kernel-headers, 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 Ease: No known exploits are available
Patch Publication Date: 5/12/2020
Vulnerability Publication Date: 9/4/2019