Home / mailings [RHSA-2022:7319-01] Important: kernel-rt security and bug fix update
Posted on 02 November 2022
RedHat===================================================================== Red Hat Security Advisory
Synopsis: Important: kernel-rt security and bug fix update
Advisory ID: RHSA-2022:7319-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:7319
Issue date: 2022-11-02
CVE Names: CVE-2022-2585 CVE-2022-30594
=====================================================================
1. Summary:
An update for kernel-rt is now available for Red Hat Enterprise Linux 9.
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 Real Time (v. 9) - x86_64
Red Hat Enterprise Linux Real Time for NFV (v. 9) - 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):
* posix cpu timer use-after-free may lead to local privilege escalation
(CVE-2022-2585)
* Unprivileged users may use PTRACE_SEIZE to set PTRACE_O_SUSPEND_SECCOMP
option (CVE-2022-30594)
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):
* Update RT source tree to the latest RHEL-9.0.z4 Batch (BZ#2123498)
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/):
2085300 - CVE-2022-30594 kernel: Unprivileged users may use PTRACE_SEIZE to set PTRACE_O_SUSPEND_SECCOMP option
2114874 - CVE-2022-2585 kernel: posix cpu timer use-after-free may lead to local privilege escalation
6. Package List:
Red Hat Enterprise Linux Real Time for NFV (v. 9):
Source:
kernel-rt-5.14.0-70.30.1.rt21.102.el9_0.src.rpm
x86_64:
kernel-rt-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-core-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-debug-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-debug-core-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-debug-debuginfo-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-debug-devel-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-debug-kvm-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-debug-modules-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-debug-modules-extra-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-debuginfo-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-devel-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-kvm-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-modules-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-modules-extra-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
Red Hat Enterprise Linux Real Time (v. 9):
Source:
kernel-rt-5.14.0-70.30.1.rt21.102.el9_0.src.rpm
x86_64:
kernel-rt-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-core-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-debug-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-debug-core-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-debug-debuginfo-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-debug-devel-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-debug-modules-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-debug-modules-extra-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-debuginfo-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-devel-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-modules-5.14.0-70.30.1.rt21.102.el9_0.x86_64.rpm
kernel-rt-modules-extra-5.14.0-70.30.1.rt21.102.el9_0.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-2022-2585
https://access.redhat.com/security/cve/CVE-2022-30594
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2022 Red Hat, Inc.
