RHSA-2023:5221: Security update for 4 packages

RHSA-2023:5221, released September 19, 2023, fixes 6 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

7.8

Base score, 0 to 10

Highest EPSS

0.0154

75th percentile

Priority of the 6 CVEs

Patch now 0
                                Urgent 0
                                High 6
                                Routine 0

Fixed package versions

Product	Release	Fixed in
kpatch-patch-4_18_0-477_10_1	RHEL 8	0:1-3.el8_8
kpatch-patch-4_18_0-477_13_1	RHEL 8	0:1-2.el8_8
kpatch-patch-4_18_0-477_15_1	RHEL 8	0:1-2.el8_8
kpatch-patch-4_18_0-477_21_1	RHEL 8	0:1-1.el8_8

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2023-35001	bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: i...	7.8	0.0154	None reported
High	CVE-2023-4004	bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: i...	7.8	0.0092	None reported
High	CVE-2023-3390	linux: A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c	7.8	0.0091	None reported
High	CVE-2023-35788	linux: An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7	7.8	0.0052	None reported
High	CVE-2023-3776	kernel-abi-stablelists: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: i...	7.8	0.0051	None reported
High	CVE-2023-3090	kernel-core: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: i...	7.8	0.0048	None reported

Also fixes CVE-2023-35001

RHSA-2023:5069
bpftool, kernel, kernel-64k and 43 more on RHEL 9
RHSA-2023:5244
bpftool, kernel, kernel-abi-stablelists and 20 more on RHEL 8
RLSA-2023:5091
kernel-rt on rocky 9
ALSA-2023:5069
bpftool, kernel, kernel-64k and 42 more on almalinux 9
ALSA-2023:5091
kernel-rt, kernel-rt-core, kernel-rt-debug and 11 more on almalinux 9
RHSA-2023:5091
kernel-rt, kernel-rt-core, kernel-rt-debug and 11 more on RHEL 9
RHSA-2023:5255
kernel-rt, kernel-rt-core, kernel-rt-debug and 9 more on RHEL 8
RXSA-2023:5244
kernel on rocky 8

Vendor advisory

https://access.redhat.com/errata/RHSA-2023:5221

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