RHSA-2024:5673 - 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: efivarfs: force RO when remounting if SetVariable is not supported (CVE-2023-52463)
• kernel: igc: avoid returning frame twice in XDP_REDIRECT (CVE-2024-26853)
• kernel: mm/hugetlb: fix missing hugetlb_lock for resv uncharge (CVE-2024-36000)
• kernel: bpf, sockmap: Don't let sock_map_{close,destroy,unhash} call itself (CVE-2023-52735)
• kernel: net: fix out-of-bounds access in ops_init (CVE-2024-36883)
• kernel: net/mlx5e: Fix netif state handling (CVE-2024-38608)
• kernel: net/sched: act_api: fix possible infinite loop in tcf_idr_check_alloc() (CVE-2024-40995)
• kernel: virtio-net: tap: mlx5_core short frame denial of service (CVE-2024-41090)
• kernel: virtio-net: tun: mlx5_core short frame denial of service (CVE-2024-41091)
• kernel: NFSv4: Fix memory leak in nfs4_set_security_label (CVE-2024-41076)
• kernel: ice: Don't process extts if PTP is disabled (CVE-2024-42107)

Bug Fix(es):

• kernel-rt: update RT source tree to the latest RHEL-9.2 ad hoc schedule build (JIRA:RHEL-54222)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer 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 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 - 2265797 - CVE-2023-52463 kernel: efivarfs: force RO when remounting if SetVariable is not supported
• BZ - 2275748 - CVE-2024-26853 kernel: igc: avoid returning frame twice in XDP_REDIRECT
• BZ - 2281968 - CVE-2024-36000 kernel: mm/hugetlb: fix missing hugetlb_lock for resv uncharge
• BZ - 2282618 - CVE-2023-52735 kernel: bpf, sockmap: Don't let sock_map_{close,destroy,unhash} call itself
• BZ - 2284271 - CVE-2024-36883 kernel: net: fix out-of-bounds access in ops_init
• BZ - 2293356 - CVE-2024-38608 kernel: net/mlx5e: Fix netif state handling
• BZ - 2297579 - CVE-2024-40995 kernel: net/sched: act_api: fix possible infinite loop in tcf_idr_check_alloc()
• BZ - 2299240 - CVE-2024-41090 kernel: virtio-net: tap: mlx5_core short frame denial of service
• BZ - 2299336 - CVE-2024-41091 kernel: virtio-net: tun: mlx5_core short frame denial of service
• BZ - 2300453 - CVE-2024-41076 kernel: NFSv4: Fix memory leak in nfs4_set_security_label
• BZ - 2301766 - CVE-2024-42107 kernel: ice: Don't process extts if PTP is disabled

CVEs

• CVE-2023-52463
• CVE-2023-52735
• CVE-2024-26853
• CVE-2024-36000
• CVE-2024-36883
• CVE-2024-38608
• CVE-2024-40995
• CVE-2024-41076
• CVE-2024-41090
• CVE-2024-41091
• CVE-2024-42107

References

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