RHSA-2024:1306 - Security Advisory

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.0 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):

• memcg does not limit the number of POSIX file locks allowing memory exhaustion (CVE-2022-0480)
• vmwgfx: NULL pointer dereference in vmw_cmd_dx_define_query (CVE-2022-38096)
• use-after-free in smb2_is_status_io_timeout() (CVE-2023-1192)
• 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)
• UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)
• out-of-bounds access in relay_file_read (CVE-2023-3268)
• vmxnet3: NULL pointer dereference in vmxnet3_rq_cleanup() (CVE-2023-4459)
• Gather Data Sampling (GDS) side channel vulnerability (CVE-2022-40982,Downfall)
• net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails (CVE-2023-3609)
• fbcon: out-of-sync arrays in fbcon_mode_deleted due to wrong con2fb_map assignment (CVE-2023-38409)
• Race Condition leading to UAF in Unix Socket could happen in sk_receive_queue ()
• use-after-free in l2cap_sock_release in net/bluetooth/l2cap_sock.c (CVE-2023-40283)
• use after free in unix_stream_sendpage (CVE-2023-4622)
• bpf: Incorrect verifier pruning leads to unsafe code paths being incorrectly marked as safe (CVE-2023-2163)
• A heap out-of-bounds write when function perf_read_group is called and sibling_list is smaller than its child's sibling_list (CVE-2023-5717)
• ktls overwrites readonly memory pages when using function splice with a ktls socket as destination (CVE-2024-0646)
• use-after-free in IPv4 IGMP (CVE-2023-6932)
• GSM multiplexing race condition leads to privilege escalation (CVE-2023-6546,ZDI-CAN-20527)
• refcount leak in ctnetlink_create_conntrack() (CVE-2023-7192)

Bug Fix(es):

• fbcon: out-of-sync arrays in fbcon_mode_deleted due to wrong con2fb_map assignment (JIRA:RHEL-1107)
• out-of-bounds access in relay_file_read (JIRA:RHEL-1749)
• vmxnet3: NULL pointer dereference in vmxnet3_rq_cleanup() (JIRA:RHEL-18085)
• NULL pointer dereference in can_rcv_filter (JIRA:RHEL-19524)
• update RT source tree to the latest RHEL-9.0.z Batch 15 (JIRA:RHEL-21555)
• Gather Data Sampling (GDS) side channel vulnerability (JIRA:RHEL-9285)
• A heap out-of-bounds write (JIRA:RHEL-18011)
• Slab-out-of-bound read in compare_netdev_and_ip (JIRA:RHEL-19398)
• A flaw leading to a use-after-free in area_cache_get() (JIRA:RHEL-19534)
• Incorrect verifier pruning leads to unsafe code paths being incorrectly marked as safe (JIRA:RHEL-8980)
• various flaws (JIRA:RHEL-16150)
• refcount leak in ctnetlink_create_conntrack() (JIRA:RHEL-20311)
• use-after-free in l2cap_sock_release in net/bluetooth/l2cap_sock.c (JIRA:RHEL-20502)
• ktls overwrites readonly memory pages when using function splice with a ktls socket as destination (JIRA:RHEL-22095)
• use-after-free in smb2_is_status_io_timeout() (JIRA:RHEL-15171)
• use-after-free in IPv4 IGMP (JIRA:RHEL-21658)
• memcg does not limit the number of POSIX file locks allowing memory exhaustion (JIRA:RHEL-8996)
• GSM multiplexing race condition leads to privilege escalation (JIRA:RHEL-19968)
• NULL pointer dereference in vmw_cmd_dx_define_query (JIRA:RHEL-22751)
• kernel: sched/membarrier: reduce the ability to hammer on sys_membarrier

(JIRA:RHEL-26381)

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 9.0 x86_64
• Red Hat Enterprise Linux for Real Time for NFV for x86_64 - 4 years of updates 9.0 x86_64

Fixes

• BZ - 2049700 - CVE-2022-0480 kernel: memcg does not limit the number of POSIX file locks allowing memory exhaustion
• BZ - 2133452 - CVE-2022-38096 kernel: vmwgfx: NULL pointer dereference in vmw_cmd_dx_define_query
• BZ - 2154178 - CVE-2023-1192 kernel: use-after-free in smb2_is_status_io_timeout()
• 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 - 2213260 - CVE-2023-3390 kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests
• BZ - 2215502 - CVE-2023-3268 kernel: out-of-bounds access in relay_file_read
• BZ - 2219268 - CVE-2023-4459 kernel: vmxnet3: NULL pointer dereference in vmxnet3_rq_cleanup()
• BZ - 2223949 - CVE-2022-40982 hw: Intel: Gather Data Sampling (GDS) side channel vulnerability
• BZ - 2225201 - CVE-2023-3609 kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails
• BZ - 2230042 - CVE-2023-38409 kernel: fbcon: out-of-sync arrays in fbcon_mode_deleted due to wrong con2fb_map assignment
• BZ - 2230094 - kernel: Race Condition leading to UAF in Unix Socket could happen in sk_receive_queue
• BZ - 2231800 - CVE-2023-40283 kernel: use-after-free in l2cap_sock_release in net/bluetooth/l2cap_sock.c
• BZ - 2237760 - CVE-2023-4622 kernel: use after free in unix_stream_sendpage
• BZ - 2240249 - CVE-2023-2163 kernel: bpf: Incorrect verifier pruning leads to unsafe code paths being incorrectly marked as safe
• BZ - 2246945 - CVE-2023-5717 kernel: A heap out-of-bounds write when function perf_read_group is called and sibling_list is smaller than its child's sibling_list
• BZ - 2253908 - CVE-2024-0646 kernel: ktls overwrites readonly memory pages when using function splice with a ktls socket as destination
• BZ - 2255283 - CVE-2023-6932 kernel: use-after-free in IPv4 IGMP
• BZ - 2255498 - CVE-2023-6546 kernel: GSM multiplexing race condition leads to privilege escalation
• BZ - 2256279 - CVE-2023-7192 kernel: refcount leak in ctnetlink_create_conntrack()
• BZ - 2267695 - CVE-2024-26602 kernel: sched/membarrier: reduce the ability to hammer on sys_membarrier

CVEs

• CVE-2022-0480
• CVE-2022-3545
• CVE-2022-38096
• CVE-2022-40982
• CVE-2023-1192
• CVE-2023-2163
• CVE-2023-2166
• CVE-2023-2176
• CVE-2023-3268
• CVE-2023-3390
• CVE-2023-3609
• CVE-2023-4459
• CVE-2023-4622
• CVE-2023-5717
• CVE-2023-6546
• CVE-2023-6932
• CVE-2023-7192
• CVE-2023-38409
• CVE-2023-40283
• CVE-2024-0646

References

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