Home / mailings [RHSA-2023:5255-01] Important: kernel-rt security and bug fix update
Posted on 19 September 2023
RedHat===================================================================== Red Hat Security Advisory
Synopsis: Important: kernel-rt security and bug fix update
Advisory ID: RHSA-2023:5255-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:5255
Issue date: 2023-09-19
CVE Names: CVE-2023-2002 CVE-2023-3090 CVE-2023-3390
CVE-2023-3776 CVE-2023-4004 CVE-2023-20593
CVE-2023-35001 CVE-2023-35788
=====================================================================
1. Summary:
An update for kernel-rt is now available for Red Hat Enterprise Linux 8.
'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. 8) - x86_64
Red Hat Enterprise Linux RT (v. 8) - 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: bluetooth: Unauthorized management command execution
(CVE-2023-2002)
* kernel: UAF in nftables when nft_set_lookup_global triggered after
handling
named and anonymous sets in batch requests (CVE-2023-3390)
* kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt()
(CVE-2023-35788)
* hw: amd: Cross-Process Information Leak (CVE-2023-20593,zenbleed)
* kernel: ipvlan: out-of-bounds write caused by unclear skb->cb
(CVE-2023-3090)
* kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval()
(CVE-2023-35001,ZDI-CAN-20721)
* kernel: net/sched: cls_fw component can be exploited as result of failure
in
tcf_change_indev function (CVE-2023-3776)
* kernel: netfilter: use-after-free due to improper element removal in
nft_pipapo_remove() (CVE-2023-4004)
Bug Fix(es):
* kernel-rt: update RT source tree to the RHEL-8.8.z3 source tree
(BZ#2227068)
* pods get restarted due to failed probes (BZ#2227238)
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/):
2187308 - CVE-2023-2002 Kernel: bluetooth: Unauthorized management command execution
2213260 - CVE-2023-3390 kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests
2215768 - CVE-2023-35788 kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt()
2217845 - CVE-2023-20593 hw: amd: Cross-Process Information Leak
2218672 - CVE-2023-3090 kernel: ipvlan: out-of-bounds write caused by unclear skb->cb
2220892 - CVE-2023-35001 kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval()
2225097 - CVE-2023-3776 kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function
2225275 - CVE-2023-4004 kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove()
6. Package List:
Red Hat Enterprise Linux NFV (v. 8):
Source:
kernel-rt-4.18.0-477.27.1.rt7.290.el8_8.src.rpm
x86_64:
kernel-rt-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-core-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-debug-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-debug-core-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-debug-devel-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-debug-kvm-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-debug-modules-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-debuginfo-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-devel-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-kvm-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-modules-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-modules-extra-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
Red Hat Enterprise Linux RT (v. 8):
Source:
kernel-rt-4.18.0-477.27.1.rt7.290.el8_8.src.rpm
x86_64:
kernel-rt-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-core-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-debug-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-debug-core-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-debug-devel-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-debug-modules-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-debuginfo-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-devel-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-modules-4.18.0-477.27.1.rt7.290.el8_8.x86_64.rpm
kernel-rt-modules-extra-4.18.0-477.27.1.rt7.290.el8_8.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-2023-2002
https://access.redhat.com/security/cve/CVE-2023-3090
https://access.redhat.com/security/cve/CVE-2023-3390
https://access.redhat.com/security/cve/CVE-2023-3776
https://access.redhat.com/security/cve/CVE-2023-4004
https://access.redhat.com/security/cve/CVE-2023-20593
https://access.redhat.com/security/cve/CVE-2023-35001
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.
