An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.4
 Update Services for SAP Solutions.

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.

This is a kernel live patch module which is automatically loaded by the RPM
 post-install script to modify the code of a running kernel.

Security Fix(es):

* kernel: bpf: Incorrect verifier pruning leads to unsafe code paths being
 incorrectly marked as safe (CVE-2023-2163)

* kernel: tun: bugs for oversize packet when napi frags enabled in
 tun_napi_alloc_frags (CVE-2023-3812)

* kernel: use after free in unix_stream_sendpage (CVE-2023-4622)

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

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

* kernel: netfilter: potential slab-out-of-bound access due to integer
 underflow (CVE-2023-42753)

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

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.

This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2023-2163: Incorrect Calculation (CWE-682)
CVE-2023-3812: Out-of-bounds Write (CWE-787)
CVE-2023-4622: Use After Free (CWE-416)
CVE-2023-4623: Use After Free (CWE-416)
CVE-2023-4921: Use After Free (CWE-416)
CVE-2023-42753: Out-of-bounds Write (CWE-787)
CVE-2023-45871: Buffer Copy without Checking Size of Input ('Classic Buffer
 Overflow') (CWE-120)