RedHat: RHSA-2023-4126:01 Important: kernel-rt
Summary
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: net/ulp: use-after-free in listening ULP sockets (CVE-2023-0461)
* kernel: tcindex: use-after-free vulnerability in traffic control index
filter allows privilege escalation (CVE-2023-1281)
* kernel: remote DoS in TIPC kernel module (CVE-2023-1390)
* kernel: netfilter: use-after-free in nf_tables when processing batch
requests can lead to privilege escalation (CVE-2023-32233)
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 RT source tree to the RHEL-8.2.z27 source tree
(BZ#2209127)
Summary
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.
References
https://access.redhat.com/security/cve/CVE-2023-0461 https://access.redhat.com/security/cve/CVE-2023-1281 https://access.redhat.com/security/cve/CVE-2023-1390 https://access.redhat.com/security/cve/CVE-2023-32233 https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux Real Time for NFV TUS (v. 8.2):
Source:
kernel-rt-4.18.0-193.109.1.rt13.160.el8_2.src.rpm
x86_64:
kernel-rt-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-core-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-debug-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-debug-core-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-debug-devel-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-debug-kvm-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-debug-modules-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-debuginfo-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-devel-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-kvm-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-modules-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-modules-extra-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
Red Hat Enterprise Linux Real Time TUS (v. 8.2):
Source:
kernel-rt-4.18.0-193.109.1.rt13.160.el8_2.src.rpm
x86_64:
kernel-rt-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-core-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-debug-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-debug-core-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-debug-devel-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-debug-modules-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-debuginfo-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-devel-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-modules-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
kernel-rt-modules-extra-4.18.0-193.109.1.rt13.160.el8_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/
![Dist Redhat](/images/distros/dist-redhat.png)
Topic
An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2Telecommunications Update Service.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.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux Real Time TUS (v. 8.2) - x86_64
Red Hat Enterprise Linux Real Time for NFV TUS (v. 8.2) - x86_64
Bugs Fixed
2176192 - CVE-2023-0461 kernel: net/ulp: use-after-free in listening ULP sockets
2178212 - CVE-2023-1390 kernel: remote DoS in TIPC kernel module
2181847 - CVE-2023-1281 kernel: tcindex: use-after-free vulnerability in traffic control index filter allows privilege escalation
2196105 - CVE-2023-32233 kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation