A kernel-rt security and bug fix update has been released for Red Hat Enterprise Linux 7.
RHSA-2022:0622-01: Important: kernel-rt security and bug fix update
=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel-rt security and bug fix update
Advisory ID: RHSA-2022:0622-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:0622
Issue date: 2022-02-22
CVE Names: CVE-2020-0465 CVE-2020-0466 CVE-2021-0920
CVE-2021-3564 CVE-2021-3573 CVE-2021-3752
CVE-2021-4155 CVE-2022-0330 CVE-2022-22942
=====================================================================
1. Summary:
An update for kernel-rt is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux for Real Time (v. 7) - noarch, x86_64
Red Hat Enterprise Linux for Real Time for NFV (v. 7) - noarch, x86_64
3. Description:
The kernel-rt packages provide the Real Time Linux Kernel, which enables
fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: use after free in eventpoll.c may lead to escalation of privilege
(CVE-2020-0466)
* kernel: Use After Free in unix_gc() which could result in a local
privilege escalation (CVE-2021-0920)
* kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL
(CVE-2021-4155)
* kernel: possible privileges escalation due to missing TLB flush
(CVE-2022-0330)
* kernel: failing usercopy allows for use-after-free exploitation
(CVE-2022-22942)
* kernel: out of bounds write in hid-multitouch.c may lead to escalation of
privilege (CVE-2020-0465)
* kernel: double free in bluetooth subsystem when the HCI device
initialization fails (CVE-2021-3564)
* kernel: use-after-free in function hci_sock_bound_ioctl() (CVE-2021-3573)
* kernel: possible use-after-free in bluetooth module (CVE-2021-3752)
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-rt: update to the latest RHEL7.9.z12 source tree (BZ#2039101)
4. 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.
5. Bugs fixed ( https://bugzilla.redhat.com/):
1920471 - CVE-2020-0465 kernel: out of bounds write in hid-multitouch.c may lead to escalation of privilege
1920480 - CVE-2020-0466 kernel: use after free in eventpoll.c may lead to escalation of privilege
1964139 - CVE-2021-3564 kernel: double free in bluetooth subsystem when the HCI device initialization fails
1966578 - CVE-2021-3573 kernel: use-after-free in function hci_sock_bound_ioctl()
1999544 - CVE-2021-3752 kernel: possible use-after-free in bluetooth module
2031930 - CVE-2021-0920 kernel: Use After Free in unix_gc() which could result in a local privilege escalation
2034813 - CVE-2021-4155 kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL
2042404 - CVE-2022-0330 kernel: possible privileges escalation due to missing TLB flush
2044809 - CVE-2022-22942 kernel: failing usercopy allows for use-after-free exploitation
6. Package List:
Red Hat Enterprise Linux for Real Time for NFV (v. 7):
Source:
kernel-rt-3.10.0-1160.59.1.rt56.1200.el7.src.rpm
noarch:
kernel-rt-doc-3.10.0-1160.59.1.rt56.1200.el7.noarch.rpm
x86_64:
kernel-rt-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-debug-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-debug-kvm-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-debug-kvm-debuginfo-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-debuginfo-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-devel-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-kvm-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-kvm-debuginfo-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-trace-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-trace-kvm-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-trace-kvm-debuginfo-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
Red Hat Enterprise Linux for Real Time (v. 7):
Source:
kernel-rt-3.10.0-1160.59.1.rt56.1200.el7.src.rpm
noarch:
kernel-rt-doc-3.10.0-1160.59.1.rt56.1200.el7.noarch.rpm
x86_64:
kernel-rt-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-debug-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-debuginfo-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-devel-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-trace-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2020-0465
https://access.redhat.com/security/cve/CVE-2020-0466
https://access.redhat.com/security/cve/CVE-2021-0920
https://access.redhat.com/security/cve/CVE-2021-3564
https://access.redhat.com/security/cve/CVE-2021-3573
https://access.redhat.com/security/cve/CVE-2021-3752
https://access.redhat.com/security/cve/CVE-2021-4155
https://access.redhat.com/security/cve/CVE-2022-0330
https://access.redhat.com/security/cve/CVE-2022-22942
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2022 Red Hat, Inc.
