RHSA-2024:0461 — Security Advisory

Red Hat Security Advisory: kernel security update

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Severity

Important

Red Hat Product Security

RHEL 9

Products

Official CSAF product identity

Published · January 25, 2024

Updated · October 27, 2026

Topic

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.

Description

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

Security Fix(es):

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 nvmet_tcp_free_crypto in NVMe (CVE-2023-5178)
kernel: vmwgfx: reference count issue leads to use-after-free in surface handling (CVE-2023-5633)
kernel: netfilter: potential slab-out-of-bound access due to integer underflow (CVE-2023-42753)
kernel: nfp: use-after-free in area_cache_get() (CVE-2022-3545)
kernel: vmwgfx: integer overflow in vmwgfx_execbuf.c (CVE-2022-36402)
kernel: null-ptr-deref vulnerabilities in sl_tx_timeout in drivers/net/slip (CVE-2022-41858)
kernel: NULL pointer dereference in can_rcv_filter (CVE-2023-2166)
kernel: Slab-out-of-bound read in compare_netdev_and_ip (CVE-2023-2176)
kernel: use-after-free in netfilter: nf_tables (CVE-2023-3777)
kernel: use after free in nft_immediate_deactivate (CVE-2023-4015)
kernel: fbcon: out-of-sync arrays in fbcon_mode_deleted due to wrong con2fb_map assignment (CVE-2023-38409)
kernel: use-after-free in l2cap_sock_release in net/bluetooth/l2cap_sock.c (CVE-2023-40283)
kernel: SEV-ES local priv escalation (CVE-2023-46813)
kernel: NULL pointer dereference in dpll_pin_parent_pin_set() in drivers/dpll/dpll_netlink.c (CVE-2023-6679)

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.