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RHEL 8 : kernel (RHSA-2021:1093)
high Nessus Plugin ID 148370
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Synopsis
The remote Red Hat host is missing one or more security updates.Description
The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:1093 advisory.The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: use after free in eventpoll.c may lead to escalation of privilege (CVE-2020-0466)
* kernel: SCSI target (LIO) write to any block on ILO backstore (CVE-2020-28374)
* kernel: Use after free via PI futex state (CVE-2021-3347)
* kernel: race conditions caused by wrong locking in net/vmw_vsock/af_vsock.c (CVE-2021-26708)
* kernel: out-of-bounds read in libiscsi module (CVE-2021-27364)
* kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365)
* Kernel: KVM: host stack overflow due to lazy update IOAPIC (CVE-2020-27152)
* kernel: iscsi: unrestricted access to sessions and handles (CVE-2021-27363)
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):
* race condition when creating child sockets from syncookies (BZ#1915529)
* On System Z, a hash needs state randomized for entropy extraction (BZ#1915816)
* scsi: target: core_tmr_abort_task() reporting multiple aborts for the same se_cmd->tag (BZ#1918354)
* [mlx5] VF interface stats are not reflected in ip -s link show / ifconfig <vf> commands (BZ#1921060)
* Win10 guest automatic reboot after migration in Win10 and WSL2 on Intel hosts (BZ#1923281)
* [RHEL 8.3] Repeated messages - Unable to burst-read optrom segment (BZ#1924222)
* Backport bug fix RDMA/umem: Prevent small pages from being returned by ib_umem_find_best_pgsz (BZ#1924691)
* [Cisco 8.3] RHEL/Cent 8.2 fNIC driver needs a patch fix that addresses crash (BZ#1925186)
* RHEL8.3 - The kernel misdetects zCX with z/VM (BZ#1925508)
* Backport 22e4663e91 (mm/slub: fix panic in slab_alloc_node()) (BZ#1925511)
* SCTP Address already in use when no active endpoints from RHEL 8.2 onwards (BZ#1927521)
* lpfc: Fix initial FLOGI failure due to BBSCN not supported (BZ#1927921)
* [mm] mm, oom: remove oom_lock from oom_reaper (BZ#1929738)
* Unexpected thread movement with AMD Milan compared to Rome (BZ#1929740)
* rpmbuild cannot build the userspace RPMs in the kernel package when the kernel itself is not built (BZ#1929910)
* [Regression] RHEL8.2 - ISST-LTE:pVM:diapvmlp83:sum:memory DLPAR fails to add memory on multiple trials[mm/memory_hotplug.c:1163] (mm-) (BZ#1930168)
* Configuring the system with non-RT kernel will hang the system (BZ#1930735)
* Upstream Patch for Gracefully handle DMAR units with no supported address widthsx86/vt-d (BZ#1932199)
* gfs2: Deadlock between gfs2_{create_inode,inode_lookup} and delete_work_func (BZ#1937109)
* Failing on tsx-ctrl when the flag doesn't change anything (BZ#1939013)
Enhancement(s):
* RFE: Backport all Audit enhancements and fixes up to version 5.10-rc1 (BZ#1907520)
* RHEL8.4: Update the target driver (BZ#1918363)
* [Mellanox 8.4 FEAT] mlx5: Hairpin Support in Switch Mode (BZ#1924689)
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 affected packages.See Also
http://www.nessus.org/u?62fa41eb
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/errata/RHSA-2021:1093
https://bugzilla.redhat.com/show_bug.cgi?id=1888886
https://bugzilla.redhat.com/show_bug.cgi?id=1899804
https://bugzilla.redhat.com/show_bug.cgi?id=1920480
https://bugzilla.redhat.com/show_bug.cgi?id=1922249
https://bugzilla.redhat.com/show_bug.cgi?id=1925588
https://bugzilla.redhat.com/show_bug.cgi?id=1930078
Plugin Details
Severity: High
ID: 148370
File Name: redhat-RHSA-2021-1093.nasl
Version: 1.14
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 4/7/2021
Updated: 3/6/2025
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.4
Vendor
Vendor Severity: Important
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-2021-3347
CVSS v3
Risk Factor: High
Base Score: 8.1
Temporal Score: 7.3
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
CVSS Score Source: CVE-2020-28374
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:kernel-debug-core, 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-cross-headers, p-cpe:/a:redhat:enterprise_linux:kernel-core, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs, p-cpe:/a:redhat:enterprise_linux:perf, p-cpe:/a:redhat:enterprise_linux:bpftool, p-cpe:/a:redhat:enterprise_linux:kernel-tools, p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump, p-cpe:/a:redhat:enterprise_linux:kernel-debug-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump-core, p-cpe:/a:redhat:enterprise_linux:kernel, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-modules, p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump-modules, p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump-devel, p-cpe:/a:redhat:enterprise_linux:kernel-debug-modules, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:python3-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: 4/6/2021
Vulnerability Publication Date: 11/6/2020
Reference Information
CVE: CVE-2020-0466, CVE-2020-27152, CVE-2020-28374, CVE-2021-26708, CVE-2021-27363, CVE-2021-27364, CVE-2021-27365, CVE-2021-3347