Linux · Security advisory · April 5, 2023

ELSA-2023-1566: Security update for 20 packages

ELSA-2023-1566, released April 5, 2023, fixes 4 CVEs across 20 products. 2 of them are being exploited (CVE-2023-0386); 2 on CISA KEV. Patch Radar priority: Patch now.

Patch now2 on CISA KEV

CVEs closed

None rated Critical

Exploited

CVE-2023-0386

Exploitation more likely

Vendor assessment

Highest EPSS

0.0788

94th percentile

Priority of the 4 CVEs

Patch now 2
                                Urgent 0
                                High 2
                                Routine 0

Fixed package versions

Product	Release	Fixed in
bpftool	ol 8	0:4.18.0-425.19.2.el8_7
kernel	ol 8	0:4.18.0-425.19.2.el8_7
kernel-abi-stablelists	ol 8	0:4.18.0-425.19.2.el8_7
kernel-core	ol 8	0:4.18.0-425.19.2.el8_7
kernel-cross-headers	ol 8	0:4.18.0-425.19.2.el8_7
kernel-debug	ol 8	0:4.18.0-425.19.2.el8_7
kernel-debug-core	ol 8	0:4.18.0-425.19.2.el8_7
kernel-debug-devel	ol 8	0:4.18.0-425.19.2.el8_7
kernel-debug-modules	ol 8	0:4.18.0-425.19.2.el8_7
kernel-debug-modules-extra	ol 8	0:4.18.0-425.19.2.el8_7
kernel-devel	ol 8	0:4.18.0-425.19.2.el8_7
kernel-doc	ol 8	0:4.18.0-425.19.2.el8_7
kernel-headers	ol 8	0:4.18.0-425.19.2.el8_7
kernel-modules	ol 8	0:4.18.0-425.19.2.el8_7
kernel-modules-extra	ol 8	0:4.18.0-425.19.2.el8_7
kernel-tools	ol 8	0:4.18.0-425.19.2.el8_7
kernel-tools-libs	ol 8	0:4.18.0-425.19.2.el8_7
kernel-tools-libs-devel	ol 8	0:4.18.0-425.19.2.el8_7
perf	ol 8	0:4.18.0-425.19.2.el8_7
python3-perf	ol 8	0:4.18.0-425.19.2.el8_7

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Patch now	CVE-2023-0386	bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: s...	7.8	0.0788	KEVExploited
Patch now	CVE-2023-0266	bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: s...	7.8	0.0370	KEVExploited
High	CVE-2022-4378	kernel-abi-stablelists: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: s...	7.8	0.0044	None reported
High	CVE-2022-4269	kernel-debug-devel: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: s...	7.8	0.0020	None reported

Also fixes CVE-2023-0386

RXSA-2023:1566
kernel on rocky 8
RLSA-2023:1584
kernel-rt on rocky 8
RHSA-2023:1659
kpatch-patch-4_18_0-425_10_1, kpatch-patch-4_18_0-425_13_1, kpatch-patch-4_18_0-425_3_1 on RHEL 8
ALSA-2023:1566
bpftool, kernel, kernel-abi-stablelists and 21 more on almalinux 8
ALSA-2023:1584
kernel-rt, kernel-rt-core, kernel-rt-debug and 9 more on almalinux 8
RHSA-2023:1566
bpftool, kernel, kernel-abi-stablelists and 20 more on RHEL 8
RHSA-2023:1584
kernel-rt, kernel-rt-core, kernel-rt-debug and 9 more on RHEL 8
DSA-5402-1
linux on Debian 11.6 (bullseye)

Vendor advisory

https://linux.oracle.com/errata/ELSA-2023-1566.html

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