RHSA-2024:1882 - 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 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.

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: Marvin vulnerability side-channel leakage in the RSA decryption operation (CVE-2023-6240)
• kernel: tls: use-after-free with partial reads and async decrypt (CVE-2024-26582)
• kernel: tls: handle backlogging of crypto requests (CVE-2024-26584)
• kernel: mlxsw: spectrum_acl_tcam: Fix stack corruption (CVE-2024-26586)

Bug Fix(es):

• kernel-rt: kernel: mlxsw: spectrum_acl_tcam: Fix stack corruption (JIRA:RHEL-29214)
• kernel-rt: update RT source tree to the latest RHEL-9.2 ad hoc schedule build (JIRA:RHEL-30439)
• kernel-rt: kernel: tls: use-after-free with partial reads and async decrypt (JIRA:RHEL-26399)
• kernel-rt: kernel: Marvin vulnerability side-channel leakage in the RSA decryption operation (JIRA:RHEL-29687)
• kernel-rt: kernel: tls: handle backlogging of crypto requests (JIRA:RHEL-30451)

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 - 2250843 - CVE-2023-6240 kernel: Marvin vulnerability side-channel leakage in the RSA decryption operation
• BZ - 2265518 - CVE-2024-26582 kernel: tls: use-after-free with partial reads and async decrypt
• BZ - 2265519 - CVE-2024-26584 kernel: tls: handle backlogging of crypto requests
• BZ - 2265645 - CVE-2024-26586 kernel: mlxsw: spectrum_acl_tcam: Fix stack corruption

CVEs

• CVE-2023-6240
• CVE-2024-26582
• CVE-2024-26584
• CVE-2024-26586

References

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