Red Hat alert RHSA-2023:7389-01 (kernel-rt)

An update for kernel-rt 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-rt packages provide the Real Time Linux Kernel, which enables
fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

* kernel: net/sched: cls_fw component can be exploited as result of failure
in tcf_change_indev function (CVE-2023-3776)

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

* kernel: netfilter: use-after-free due to improper element removal in
nft_pipapo_remove() (CVE-2023-4004)

* kernel: netfilter: nf_tables_newrule when adding a rule with
NFTA_RULE_CHAIN_ID leads to use-after-free (CVE-2023-4147)

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

* kernel: use-after-free due to race condition in qdisc_graft()
(CVE-2023-0590)

* hw: amd: Cross-Process Information Leak (CVE-2023-20593)

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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Original: https://access.redhat.com/security/data/csaf/v2/advisories/2023/rhsa-2023_7389.json