RHSA-2024:5065 - Security Advisory

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service.

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 packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: drm: Don't unref the same fb many times by mistake due to deadlock handling (CVE-2023-52486)
• kernel: tcp: add sanity checks to rx zerocopy (CVE-2024-26640)
• kernel: vfio/pci: Lock external INTx masking ops (CVE-2024-26810)
• kernel: mptcp: fix data re-injection from stale subflow (CVE-2024-26826)
• kernel: NFSv4.2: fix nfs4_listxattr kernel BUG at mm/usercopy.c:102 (CVE-2024-26870)
• kernel: mac802154: fix llsec key resources release in mac802154_llsec_key_del (CVE-2024-26961)
• kernel: wifi: mac80211: check/clear fast rx for non-4addr sta VLAN changes (CVE-2024-35789)
• kernel: mm/hugetlb: fix missing hugetlb_lock for resv uncharge (CVE-2024-36000)
• kernel: hwmon: (mlxreg-fan) Return non-zero value when fan current state is enforced from sysfs (CVE-2021-47393)
• kernel: net/mlx5: Discard command completions in internal error (CVE-2024-38555)
• kernel: ipvlan: Dont Use skb->sk in ipvlan_process_v{4,6}_outbound (CVE-2024-33621)
• kernel: tls: fix missing memory barrier in tls_init (CVE-2024-36489)

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 for x86_64 - Extended Life Cycle Long Life 8.6 x86_64
• Red Hat Enterprise Linux Server - AUS 8.6 x86_64
• Red Hat Enterprise Linux Server - TUS 8.6 x86_64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6 x86_64
• Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle Long Life 8.6 aarch64
• Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle Long Life 8.6 ppc64le
• Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle Long Life 8.6 s390x

Fixes

• BZ - 2269070 - CVE-2023-52486 kernel: drm: Don't unref the same fb many times by mistake due to deadlock handling
• BZ - 2270100 - CVE-2024-26640 kernel: tcp: add sanity checks to rx zerocopy
• BZ - 2273654 - CVE-2024-26810 kernel: vfio/pci: Lock external INTx masking ops
• BZ - 2275604 - CVE-2024-26826 kernel: mptcp: fix data re-injection from stale subflow
• BZ - 2275711 - CVE-2024-26870 kernel: NFSv4.2: fix nfs4_listxattr kernel BUG at mm/usercopy.c:102
• BZ - 2278176 - CVE-2024-26961 kernel: mac802154: fix llsec key resources release in mac802154_llsec_key_del
• BZ - 2281057 - CVE-2024-35789 kernel: wifi: mac80211: check/clear fast rx for non-4addr sta VLAN changes
• BZ - 2281968 - CVE-2024-36000 kernel: mm/hugetlb: fix missing hugetlb_lock for resv uncharge
• BZ - 2282345 - CVE-2021-47393 kernel: hwmon: (mlxreg-fan) Return non-zero value when fan current state is enforced from sysfs
• BZ - 2293444 - CVE-2024-38555 kernel: net/mlx5: Discard command completions in internal error
• BZ - 2293657 - CVE-2024-33621 kernel: ipvlan: Dont Use skb->sk in ipvlan_process_v{4,6}_outbound
• BZ - 2293687 - CVE-2024-36489 kernel: tls: fix missing memory barrier in tls_init

CVEs

• CVE-2021-47393
• CVE-2023-52486
• CVE-2024-26640
• CVE-2024-26810
• CVE-2024-26826
• CVE-2024-26870
• CVE-2024-26961
• CVE-2024-33621
• CVE-2024-35789
• CVE-2024-36000
• CVE-2024-36489
• CVE-2024-38555

References

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