Red Hat alert RHSA-2023:5627-01 (kernel) [LWN.net]

An update for kernel is now available for Red Hat Enterprise Linux 8.6
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: use-after-free vulnerability in the perf_group_detach function of
the Linux Kernel Performance Events (CVE-2023-2235)

* kernel: ipvlan: out-of-bounds write caused by unclear skb->cb
(CVE-2023-3090)

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

* kernel: net/sched: Use-after-free vulnerabilities in the net/sched
classifiers: cls_fw, cls_u32 and cls_route (CVE-2023-4128)

* kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval()
(CVE-2023-35001)

* kernel: race condition in VT_RESIZEX ioctl when vc_cons[i].d is already
NULL leading to NULL pointer dereference (CVE-2020-36558)

* kernel: LoadPin bypass via dm-verity table reload (CVE-2022-2503)

* kernel: an out-of-bounds vulnerability in i2c-ismt driver (CVE-2022-2873)

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

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

* kernel: netfilter: NULL pointer dereference in nf_tables due to zeroed list
head (CVE-2023-1095)

* kernel: hash collisions in the IPv6 connection lookup table (CVE-2023-1206)

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.

Bug Fix(es):

* [HPEMC RHEL 8 REGRESSION] acpi-cpufreq: Skip initialization if a cpufreq
driver exists (BZ#2186307)

* [max] RHEL8.4 Pre-Alpha - [ 4.18.0-240.4.el8.dt2.ppc64le ][ fleetwood / P9
64TB/192c ] While performing DLPAR CPU operations "BUG: arch topology borken"
messages are observed and CPU remove operation fails for removal of 140 with
255 return (BZ#2210295)

* [Intel 8.8 BUG] [SPR] IOMMU: QAT Device Address Translation Issue with
Invalidation Completion Ordering (BZ#2221098)

* avoid unnecessary page fault retires on shared memory types (BZ#2221101)

* [i40e] error: Cannot set interface MAC/vlanid to 1e:b7:e2:02:b1:aa/0 for
ifname ens4f0 vf 0: Resource temporarily unavailable (BZ#2228164)

* oops on cifs_mount due to null tcon (BZ#2229129)

* kernel panic due to stack overflow on ppc64le due to deep call chain.
(BZ#2230268)

* [Hyper-V][RHEL 8]incomplete fc_transport implementation in storvsc causes
null dereference in fc_timed_out() (BZ#2230744)

* Withdrawal: GFS2: couldn't freeze filesystem: -16 (BZ#2231826)

* [RHEL 8][Hyper-V]Excessive hv_storvsc driver logging with srb_status
SRB_STATUS_INTERNAL_ERROR  (0x30) (BZ#2231989)

* kernel-devel RPM cross-compiled by CKI contains host-arch scripts
(BZ#2232138)

* RHEL-8: crypto: rng - Fix lock imbalance in crypto_del_rng (BZ#2232216)

* [Intel 8.9] iavf: Driver Update (BZ#2232400)

* Important iavf bug fixes July 2023 (BZ#2232401)

* iavf: hang in iavf_remove() - SNO node hangs after running systemctl reboot
(BZ#2232404)

* [RHEL 8.9] Proactively backport locking fixes from upstream (BZ#2235394)

* NAT sport clash in OCP causing 1 second TCP connection establishment delay.
(BZ#2236515)

* xfs: mount fails when device file name is long (BZ#2236814)

* netfilter: RHEL 8.8 phase 2 backports from upstream (BZ#2236817)

* swap deadlock when attempt to charge a page to a cgroup stalls waiting on
I/O plugged on another task in swap code (BZ#2237686)

Enhancement(s):

* [Intel 8.7 FEAT] TSC: Avoid clock watchdog when not needed (BZ#2216051)

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Original: https://access.redhat.com/security/data/csaf/v2/advisories/2023/rhsa-2023_5627.json