RHSA-2024:1382 - Security Advisory

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, and Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions.

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):

• vmwgfx: NULL pointer dereference in vmw_cmd_dx_define_query (CVE-2022-38096)
• null-ptr-deref vulnerabilities in sl_tx_timeout in drivers/net/slip (CVE-2022-41858)
• nfp: use-after-free in area_cache_get() (CVE-2022-3545)
• NULL pointer dereference in can_rcv_filter (CVE-2023-2166)
• Slab-out-of-bound read in compare_netdev_and_ip (CVE-2023-2176)
• out-of-bounds write in qfq_change_class function (CVE-2023-31436)
• NULL pointer dereference in vmxnet3_rq_cleanup() (CVE-2023-4459)
• net/sched: sch_qfq component can be exploited if in qfq_change_agg function happens qfq_enqueue overhead (CVE-2023-3611)
• ktls overwrites readonly memory pages when using function splice with a ktls socket as destination (CVE-2024-0646)
• inactive elements in nft_pipapo_walk (CVE-2023-6817)
• refcount leak in ctnetlink_create_conntrack() (CVE-2023-7192)

Bug Fix(es):

• out-of-bounds write in qfq_change_class function (JIRA:RHEL-12700)
• vmxnet3: NULL pointer dereference in vmxnet3_rq_cleanup() (JIRA:RHEL-18192)
• refcount leak in ctnetlink_create_conntrack() (JIRA:RHEL-20302)
• inactive elements in nft_pipapo_walk (JIRA:RHEL-20703)
• ktls overwrites readonly memory pages when using function splice with a ktls socket as destination (JIRA:RHEL-22099)
• update RT source tree to the latest RHEL-8.4.z Batch 23 (JIRA:RHEL-23825)
• null-ptr-deref vulnerabilities in sl_tx_timeout in drivers/net/slip (JIRA:RHEL-19023)
• Slab-out-of-bound read in compare_netdev_and_ip (JIRA:RHEL-19404)
• A flaw leading to a use-after-free in area_cache_get() (JIRA:RHEL-19530)
• vmxgfx: NULL pointer dereference in vmw_cmd_dx_define_query (JIRA:RHEL-22755)
• NULL pointer dereference in can_rcv_filter (JIRA:RHEL-19520)

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 Update Support Extension 8.4 x86_64
• Red Hat Enterprise Linux for Real Time - Telecommunications Update Service 8.4 x86_64
• Red Hat Enterprise Linux for Real Time for NFV - Telecommunications Update Service 8.4 x86_64

Fixes

• BZ - 2133452 - CVE-2022-38096 kernel: vmwgfx: NULL pointer dereference in vmw_cmd_dx_define_query
• BZ - 2144379 - CVE-2022-41858 kernel: null-ptr-deref vulnerabilities in sl_tx_timeout in drivers/net/slip
• BZ - 2161310 - CVE-2022-3545 kernel: nfp: use-after-free in area_cache_get()
• BZ - 2187813 - CVE-2023-2166 kernel: NULL pointer dereference in can_rcv_filter
• BZ - 2187931 - CVE-2023-2176 kernel: Slab-out-of-bound read in compare_netdev_and_ip
• BZ - 2192671 - CVE-2023-31436 kernel: out-of-bounds write in qfq_change_class function
• BZ - 2219268 - CVE-2023-4459 kernel: vmxnet3: NULL pointer dereference in vmxnet3_rq_cleanup()
• BZ - 2225191 - CVE-2023-3611 kernel: net/sched: sch_qfq component can be exploited if in qfq_change_agg function happens qfq_enqueue overhead
• BZ - 2253908 - CVE-2024-0646 kernel: ktls overwrites readonly memory pages when using function splice with a ktls socket as destination
• BZ - 2255139 - CVE-2023-6817 kernel: inactive elements in nft_pipapo_walk
• BZ - 2256279 - CVE-2023-7192 kernel: refcount leak in ctnetlink_create_conntrack()

CVEs

• CVE-2022-3545
• CVE-2022-38096
• CVE-2022-41858
• CVE-2023-2166
• CVE-2023-2176
• CVE-2023-3611
• CVE-2023-4459
• CVE-2023-6817
• CVE-2023-7192
• CVE-2023-31436
• CVE-2024-0646

References

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