RHSA-2024:1746 - Security Advisory

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.7 Advanced 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 packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c (CVE-2022-42896)
• kernel: net/sched: sch_hfsc UAF (CVE-2023-4623)
• Kernel: bluetooth: Unauthorized management command execution (CVE-2023-2002)

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.

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 Server - AUS 7.7 x86_64

Fixes

• BZ - 2147364 - CVE-2022-42896 kernel: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c
• BZ - 2187308 - CVE-2023-2002 Kernel: bluetooth: Unauthorized management command execution
• BZ - 2237757 - CVE-2023-4623 kernel: net/sched: sch_hfsc UAF

CVEs

• CVE-2022-42896
• CVE-2023-2002
• CVE-2023-4623

References

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