An update for kernel is now available for Red Hat Enterprise Linux 9.

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.

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

Security Fix(es):

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

* kernel: netfilter: use-after-free in nft_trans_gc_catchall_sync leads to
 privilege escalation (CVE-2024-0193)

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

* kernel: Use-after-free in nft_verdict_dump due to a race between set GC and
 transaction (CVE-2023-4244)

* 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 (CVE-2023-5717)

* kernel: NULL pointer dereference in nvmet_tcp_build_iovec (CVE-2023-6356)

* kernel: NULL pointer dereference in nvmet_tcp_execute_request (CVE-2023-6535)

* kernel: NULL pointer dereference in __nvmet_req_complete (CVE-2023-6536)

* kernel: Out-Of-Bounds Read vulnerability in smbCalcSize (CVE-2023-6606)

* kernel: OOB Access in smb2_dump_detail (CVE-2023-6610)

* kernel: use-after-free in amdgpu_cs_wait_all_fences in
 drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c (CVE-2023-51042)

For more details about the security issue(s), including the impact, a CVSS
 score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

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CVE-2023-4244: Use After Free (CWE-416)
CVE-2023-5717: Out-of-bounds Write (CWE-787)
CVE-2023-6356: NULL Pointer Dereference (CWE-476)
CVE-2023-6535: NULL Pointer Dereference (CWE-476)
CVE-2023-6536: NULL Pointer Dereference (CWE-476)
CVE-2023-6606: Out-of-bounds Read (CWE-125)
CVE-2023-6610: Out-of-bounds Read (CWE-125)
CVE-2023-6817: Use After Free (CWE-416)
CVE-2023-51042: Use After Free (CWE-416)
CVE-2024-0193: Use After Free (CWE-416)
CVE-2024-0646