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openSUSE Leap 15.3: 2021:3876-1 Important: Kernel Security Update

opensuse
Calendar Grey December 2, 2021
Dist Opensuse Esm H88
An important Fedora upgrade addresses 39 security flaws impacting the Linux Kernel. Take action immediately to safeguard your system!
An update that solves 43 vulnerabilities, contains one feature and has 26 fixes is now available

Description

The SUSE Linux Enterprise 15 SP1 LTSS kernel was updated to receive

various security and bugfixes.

The following security bugs were fixed:

- Unprivileged BPF has been disabled by default to reduce attack surface

as too many security issues have happened in the past (jsc#SLE-22573)

You can reenable via systemctl setting

/proc/sys/kernel/unprivileged_bpf_disabled to 0.

(kernel.unprivileged_bpf_disabled = 0)

- CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible

out of bounds read due to a use after free. This could lead to local

escalation of privilege with System execution privileges needed. User

interaction is not needed for exploitation (bnc#1192045).

- CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in

list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module

in the Linux kernel A bound check failure allowed an attacker with

special user (CAP_SYS_ADMIN) privilege...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory kernel update bug fix important advisory software vulnerability openSUSE updated features

Patch

Patch Instructions:

To install this openSUSE Security Update use the SUSE recommended installation methods

like YaST online_update or "zypper patch".

Alternatively you can run the command listed for your product:

- openSUSE Leap 15.3:

zypper in -t patch openSUSE-SLE-15.3-2021-3876=1

Package List

- openSUSE Leap 15.3 (aarch64 ppc64le s390x x86_64):

kernel-default-base-debuginfo-4.12.14-197.102.2

kernel-vanilla-4.12.14-197.102.2

kernel-vanilla-base-4.12.14-197.102.2

kernel-vanilla-base-debuginfo-4.12.14-197.102.2

kernel-vanilla-debuginfo-4.12.14-197.102.2

kernel-vanilla-debugsource-4.12.14-197.102.2

kernel-vanilla-devel-4.12.14-197.102.2

kernel-vanilla-devel-debuginfo-4.12.14-197.102.2

kernel-vanilla-livepatch-devel-4.12.14-197.102.2

- openSUSE Leap 15.3 (ppc64le x86_64):

kernel-debug-base-4.12.14-197.102.2

kernel-debug-base-debuginfo-4.12.14-197.102.2

- openSUSE Leap 15.3 (x86_64):

kernel-kvmsmall-base-4.12.14-197.102.2

kernel-kvmsmall-base-debuginfo-4.12.14-197.102.2

- openSUSE Leap 15.3 (s390x):

kernel-default-man-4.12.14-197.102.2

kernel-zfcpdump-man-4.12.14-197.102.2

References

https://www.suse.com/security/cve/CVE-2018-13405.html

https://www.suse.com/security/cve/CVE-2018-9517.html

https://www.suse.com/security/cve/CVE-2019-3874.html

https://www.suse.com/security/cve/CVE-2019-3900.html

https://www.suse.com/security/cve/CVE-2020-0429.html

https://www.suse.com/security/cve/CVE-2020-12770.html

https://www.suse.com/security/cve/CVE-2020-3702.html

https://www.suse.com/security/cve/CVE-2020-4788.html

https://www.suse.com/security/cve/CVE-2021-0941.html

https://www.suse.com/security/cve/CVE-2021-20322.html

https://www.suse.com/security/cve/CVE-2021-22543.html

https://www.suse.com/security/cve/CVE-2021-31916.html

https://www.suse.com/security/cve/CVE-2021-33033.html

https://www.suse.com/security/cve/CVE-2021-33909.html

https://www.suse.com/security/cve/CVE-2021-34556.html

https://www.suse.com/security/cve/CVE-2021-34981.html

https://www.suse.com/security/cve/CVE-2021-3542.html

https://www.suse.com/security/cve/CVE-2021-35477.html

https://www.suse.com/security/cve/CVE-2021-3640.html

ht...

Read the Full Advisory

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: openSUSE-SU-2021:3876-1
Rating: important
Affected Products: openSUSE Leap 15.3 ble.

Topics%20covered

Topics Covered

security advisory kernel update bug fix important advisory software vulnerability openSUSE updated features

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