[RHSA-2023:4378-01] Important: kernel-rt security and bug fix update
=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel-rt security and bug fix update
Advisory ID: RHSA-2023:4378-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:4378
Issue date: 2023-08-01
CVE Names: CVE-2022-45869 CVE-2023-0458 CVE-2023-1998
CVE-2023-3090 CVE-2023-35788
=====================================================================
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 NFV (v. 9) - x86_64
Red Hat Enterprise Linux RT (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):
* kernel: ipvlan: out-of-bounds write caused by unclear skb->cb
(CVE-2023-3090)
* kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt()
(CVE-2023-35788)
* kernel: KVM: x86/mmu: race condition in direct_page_fault()
(CVE-2022-45869)
* kernel: speculative pointer dereference in do_prlimit() in kernel/sys.c
(CVE-2023-0458)
* kernel: Spectre v2 SMT mitigations problem (CVE-2023-1998)
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):
* RHEL9 rt: blktests block/024 failed (BZ#2209920)
* Backport pinned timers RT specific behavior for FIFO tasks (BZ#2210071)
* kernel-rt: update RT source tree to the RHEL-9.2z2 source tree
(BZ#2215122)
* kernel-rt: update RT source tree to the RHEL-9.2z2b source tree
(BZ#2222796)
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/):
2151317 - CVE-2022-45869 kernel: KVM: x86/mmu: race condition in direct_page_fault()
2187257 - CVE-2023-1998 kernel: Spectre v2 SMT mitigations problem
2193219 - CVE-2023-0458 kernel: speculative pointer dereference in do_prlimit() in kernel/sys.c
2215768 - CVE-2023-35788 kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt()
2218672 - CVE-2023-3090 kernel: ipvlan: out-of-bounds write caused by unclear skb->cb
6. Package List:
Red Hat Enterprise Linux NFV (v. 9):
Source:
kernel-rt-5.14.0-284.25.1.rt14.310.el9_2.src.rpm
x86_64:
kernel-rt-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-core-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-debug-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-debug-core-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-debug-debuginfo-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-debug-devel-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-debug-kvm-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-debug-modules-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-debug-modules-core-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-debug-modules-extra-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-debuginfo-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-devel-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-kvm-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-modules-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-modules-core-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-modules-extra-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
Red Hat Enterprise Linux RT (v. 9):
Source:
kernel-rt-5.14.0-284.25.1.rt14.310.el9_2.src.rpm
x86_64:
kernel-rt-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-core-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-debug-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-debug-core-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-debug-debuginfo-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-debug-devel-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-debug-modules-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-debug-modules-core-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-debug-modules-extra-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-debuginfo-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-devel-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-modules-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-modules-core-5.14.0-284.25.1.rt14.310.el9_2.x86_64.rpm
kernel-rt-modules-extra-5.14.0-284.25.1.rt14.310.el9_2.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-2022-45869
https://access.redhat.com/security/cve/CVE-2023-0458
https://access.redhat.com/security/cve/CVE-2023-1998
https://access.redhat.com/security/cve/CVE-2023-3090
https://access.redhat.com/security/cve/CVE-2023-35788
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 2023 Red Hat, Inc.
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A kernel-rt security and bug fix update has been released for Red Hat Enterprise Linux 9.
