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Red Hat Enterprise Linux 7 RHSA-2021-2314 Important: kernel Security Fix

red hat
Calendar Grey June 8, 2021
Dist Redhat Esm H88
Oracle has released a significant database patch for its Cloud offerings, addressing several critical vulnerabilities across multiple components.
An update for kernel is now available for Red Hat Enterprise Linux 7

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: Integer overflow in Intel(R) Graphics Drivers (CVE-2020-12362)
* kernel: Use after free via PI futex state (CVE-2021-3347)
* kernel: use-after-free in n_tty_receive_buf_common function in drivers/tty/n_tty.c (CVE-2020-8648)
* kernel: Improper input validation in some Intel(R) Graphics Drivers(CVE-2020-12363)
* kernel: Null pointer dereference in some Intel(R) Graphics Drivers(CVE-2020-12364)
* kernel: Speculation on pointer arithmetic against bpf_context pointer (CVE-2020-27170)
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):
* kernel crash when call the timer function (sctp_generate_proto_unreach_event) of sctp module (BZ#1707184)
* SCSI error handling process on HP P440ar controller gets stuck indefinitely in device reset operation (BZ#1830268)
* netfilter: reproducible deadlock on nft_log module autoload (BZ#1858329)
* netfilter: NULL pointer dereference in nf_tables_set_lookup() (BZ#1873171)
* [DELL EMC 7.9 Bug]: No acpi_pad threads on top command for "power cap policy equal to 0 watts" (BZ#1883174)
* A race between i40e_ndo_set_vf_mac() and i40e_vsi_clear() in the i40e driver causes a use after free condition of the kmalloc-4096 slab cache. (BZ#1886003)
* netxen driver performs poorly with RT kernel (BZ#1894274)
* gendisk->disk_part_tbl->last_lookup retains pointer after partition deletion (BZ#1898596)
* Kernel experiences panic in update_group_power() due to division error even with Bug 1701115 fix (BZ#1910763)
* RHEL7.9 - zfcp: fix handling of FCP_RESID_OVER bit in fcp ingress path (BZ#1917839)
* RHEL7.9 - mm/THP: do not access vma->vm_mm after calling handle_userfault (BZ#1917840)
* raid: wrong raid io account (BZ#1927106)
* qla2x00_status_cont_entry() missing upstream patch that prevents unnecessary ABRT/warnings (BZ#1933784)
* RHEL 7.9.z - System hang caused by workqueue stall in qla2xxx driver (BZ#1937945)
* selinux: setsebool can trigger a deadlock (BZ#1939091)
* [Hyper-V][RHEL-7] Cannot boot kernel 3.10.0-1160.21.1.el7.x86_64 on Hyper-V (BZ#1941841)

Topics%20covered

Topics Covered

security advisory kernel update bug fix Red Hat Enterprise Linux important security impact use after free input validation issue

References

https://access.redhat.com/security/cve/CVE-2020-8648 https://access.redhat.com/security/cve/CVE-2020-12362 https://access.redhat.com/security/cve/CVE-2020-12363 https://access.redhat.com/security/cve/CVE-2020-12364 https://access.redhat.com/security/cve/CVE-2020-27170 https://access.redhat.com/security/cve/CVE-2021-3347 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: kernel-3.10.0-1160.31.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-1160.31.1.el7.noarch.rpm kernel-doc-3.10.0-1160.31.1.el7.noarch.rpm
x86_64: bpftool-3.10.0-1160.31.1.el7.x86_64.rpm bpftool-debuginfo-3.10.0-1160.31.1.el7.x86_64.rpm kernel-3.10.0-1160.31.1.el7.x86_64.rpm kernel-debug-3.10.0-1160.31.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1160.31.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-1160.31.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1160.31.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1160.31.1.el7.x86_64.rpm kernel-devel-3.10.0-1160.31.1.el7.x86_64.rpm kernel-headers-3.10.0-1160.31.1.el7.x86_64.rpm kernel-tools-3.10.0-1160.31.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1160.31.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-1160.31.1.el7.x86_64.rpm perf-3.10.0-1160.31.1.el7.x86_64.rpm perf-debuginfo-3.10.0-1160.31.1.el7.x86_64.rpm python-perf-3.10.0-1160.31.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1160.31.1.el7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: bpftool-debuginfo-3.10.0-1160.31.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1160.31.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1160.31.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1160.31.1.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:2314-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2314
Issue date: 2021-06-08

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory kernel update bug fix Red Hat Enterprise Linux important security impact use after free input validation issue

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1802559 - CVE-2020-8648 kernel: use-after-free in n_tty_receive_buf_common function in drivers/tty/n_tty.c

1922249 - CVE-2021-3347 kernel: Use after free via PI futex state

1930246 - CVE-2020-12362 kernel: Integer overflow in Intel(R) Graphics Drivers1930249 - CVE-2020-12363 kernel: Improper input validation in some Intel(R) Graphics Drivers1930251 - CVE-2020-12364 kernel: Null pointer dereference in some Intel(R) Graphics Drivers1940627 - CVE-2020-27170 kernel: Speculation on pointer arithmetic against bpf_context pointer

1941841 - [Hyper-V][RHEL-7] Cannot boot kernel 3.10.0-1160.21.1.el7.x86_64 on Hyper-V

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