(RHSA-2024:1268) Important: kernel security and bug fix update

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

Security Fix(es):

• kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001,ZDI-CAN-20721)

• hw: Intel: Gather Data Sampling (GDS) side channel vulnerability (CVE-2022-40982,Downfall)

• kernel: net/sched: sch_qfq component can be exploited if in qfq_change_agg function happens qfq_enqueue overhead (CVE-2023-3611)

• kernel: fbcon: out-of-sync arrays in fbcon_mode_deleted due to wrong con2fb_map assignment (CVE-2023-38409)

• kernel: net/sched: sch_hfsc UAF (CVE-2023-4623)

• kernel: null-ptr-deref vulnerabilities in sl_tx_timeout in drivers/net/slip (CVE-2022-41858)

• kernel: nfp: use-after-free in area_cache_get() (CVE-2022-3545)

• kernel: use-after-free in l2cap_sock_release in net/bluetooth/l2cap_sock.c (CVE-2023-40283)

• kernel: use after free in nvmet_tcp_free_crypto in NVMe (CVE-2023-5178)

• kernel: IGB driver inadequate buffer size for frames larger than MTU (CVE-2023-45871)

• kernel: out-of-bounds write in qfq_change_class function (CVE-2023-31436)

• kernel: inactive elements in nft_pipapo_walk (CVE-2023-6817)

• kernel: ktls overwrites readonly memory pages when using function splice with a ktls socket as destination (CVE-2024-0646)

• kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)

• kernel: vmwgfx: NULL pointer dereference in vmw_cmd_dx_define_query (CVE-2022-38096)

• kernel: use-after-free in sch_qfq network scheduler (CVE-2023-4921)

Bug Fix(es):

• kernel: fbcon: out-of-sync arrays in fbcon_mode_deleted due to wrong con2fb_map assignment (JIRA:RHEL-1203)

• How to reduce or prevent thousands of kworker/events_freezable_power_efficient threads being created every time multipath -ll is run (JIRA:RHEL-15054)

• kernel: net/sched: sch_hfsc UAF (JIRA:RHEL-16461)

• [SanityOnly][kernel]BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:35 at: sock_map_update_elem_sys+0x85/0x2a0 (JIRA:RHEL-6126)

• kernel: hw: Intel: Gather Data Sampling (GDS) side channel vulnerability (JIRA:RHEL-9246)

• ipoib mcast lockup fix (JIRA:RHEL-19695)