An update for kernel 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.

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

Security Fix(es):

* kernel: xfrm_expand_policies() in net/xfrm/xfrm_policy.c can cause a refcount
to be dropped twice (CVE-2022-36879)

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

* kernel: use-after-free caused by invalid pointer hostname in
 fs/cifs/connect.c
(CVE-2023-1195)

* kernel: UAF during login when accessing the shost ipaddress (CVE-2023-2162)

* kernel: use after free in vcs_read in drivers/tty/vt/vc_screen.c due to race
(CVE-2023-3567)

* kernel: use-after-free in netfilter: nf_tables (CVE-2023-3777)

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

* 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: SEV-ES local priv escalation (CVE-2023-46813)

Bug Fix(es):

* RHEL 9 Hyper-V: Excessive hv_storvsc driver logging with srb_status 
SRB_STATUS_INTERNAL_ERROR  (0x30)

* RHEL9.0 - s390/qeth: NET2016 - fix use-after-free in HSCI

* DM multipath showing failed path for an nvme-o-FC LUN when performing I/O
operations

* XFS: sync to upstream v5.15

* AMDSERVER 9.4 Bug, Turin: Support larger microcode patches

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CVE-2022-36879: Improper Update of Reference Count (CWE-911)
CVE-2022-41858: Use After Free (CWE-416)
CVE-2023-1195: Use After Free (CWE-416)
CVE-2023-2162: Use After Free (CWE-416)
CVE-2023-3567: Use After Free (CWE-416)
CVE-2023-3777: Use After Free (CWE-416)
CVE-2023-4623: Use After Free (CWE-416)
CVE-2023-5178: Use After Free (CWE-416)
CVE-2023-45871: Buffer Copy without Checking Size of Input ('Classic Buffer
 Overflow') (CWE-120)
CVE-2023-46813: Improper Privilege Management (CWE-269)