RHSA-2024:2846 - Security Advisory

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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.

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: untrusted VMM can trigger int80 syscall handling (CVE-2024-25744)
• kernel: netfilter: nftables: exthdr: fix 4-byte stack OOB write (CVE-2023-52628)

Bug Fix(es):

• kernel-rt: kernel: untrusted VMM can trigger int80 syscall handling (JIRA:RHEL-30421)
• kernel-rt: kernel: netfilter: nftables: exthdr: fix 4-byte stack OOB write (JIRA:RHEL-31093)
• kernel-rt: update RT source tree to the latest RHEL-9.2 ad hoc schedule build (JIRA:RHEL-34746)

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.

Affected Products

• Red Hat Enterprise Linux for Real Time for x86_64 - 4 years of updates 9.2 x86_64
• Red Hat Enterprise Linux for Real Time for NFV for x86_64 - 4 years of updates 9.2 x86_64

Fixes

• BZ - 2263875 - CVE-2024-25744 kernel: untrusted VMM can trigger int80 syscall handling
• BZ - 2272041 - CVE-2023-52628 kernel: netfilter: nftables: exthdr: fix 4-byte stack OOB write

CVEs

• CVE-2023-52628
• CVE-2024-25744

References

• https://access.redhat.com/security/updates/classification/#moderate