(RHSA-2024:1306) Important: kernel-rt security and bug fix update

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)