SUSE-SU-2022:2721-1: important: Security update for the Linux Kernel
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Tue Aug 9 16:16:59 UTC 2022
SUSE Security Update: Security update for the Linux Kernel
______________________________________________________________________________
Announcement ID: SUSE-SU-2022:2721-1
Rating: important
References: #1173514 #1196973 #1198829 #1200598 #1200762
#1200910 #1201251 #1201429 #1201635 #1201636
#1201742 #1201752 #1201930 #1201940
Cross-References: CVE-2020-15393 CVE-2020-36557 CVE-2020-36558
CVE-2021-33655 CVE-2021-33656 CVE-2021-39713
CVE-2022-1462 CVE-2022-20166 CVE-2022-2318
CVE-2022-26365 CVE-2022-33740 CVE-2022-33741
CVE-2022-33742 CVE-2022-36946
CVSS scores:
CVE-2020-15393 (NVD) : 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVE-2020-15393 (SUSE): 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CVE-2020-36557 (NVD) : 5.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVE-2020-36557 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE-2020-36558 (NVD) : 5.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVE-2020-36558 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE-2021-33655 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE-2021-33655 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE-2021-33656 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE-2021-33656 (SUSE): 6.3 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H
CVE-2021-39713 (NVD) : 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE-2021-39713 (SUSE): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE-2022-1462 (NVD) : 6.3 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H
CVE-2022-1462 (SUSE): 6.3 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H
CVE-2022-20166 (NVD) : 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVE-2022-20166 (SUSE): 6.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
CVE-2022-2318 (NVD) : 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVE-2022-2318 (SUSE): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVE-2022-26365 (NVD) : 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CVE-2022-26365 (SUSE): 6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
CVE-2022-33740 (NVD) : 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CVE-2022-33740 (SUSE): 6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
CVE-2022-33741 (NVD) : 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CVE-2022-33741 (SUSE): 6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
CVE-2022-33742 (NVD) : 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CVE-2022-33742 (SUSE): 6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
CVE-2022-36946 (NVD) : 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVE-2022-36946 (SUSE): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products:
SUSE Linux Enterprise Server 12-SP2-BCL
______________________________________________________________________________
An update that fixes 14 vulnerabilities is now available.
Description:
The SUSE Linux Enterprise 12 kernel was updated to receive various
security bugfixes.
The following security bugs were fixed:
- CVE-2022-36946: Fixed an incorrect packet trucation operation which
could lead to denial of service (bnc#1201940).
- CVE-2022-20166: Fixed several possible memory safety issues due to
unsafe operations (bsc#1200598).
- CVE-2020-15393: Fixed a memory leak in the usbtest driver which could
lead to denial of service (bnc#1173514).
- CVE-2020-36558: Fixed a race condition involving VT_RESIZEX which could
lead to a NULL pointer dereference and general protection fault
(bnc#1200910).
- CVE-2020-36557: Fixed a race condition between the VT_DISALLOCATE ioctl
and closing/opening of TTYs could lead to a use-after-free (bnc#1201429).
- CVE-2021-33656: Fixed memory out of bounds write related to ioctl cmd
PIO_FONT (bnc#1201636).
- CVE-2021-33655: Fixed out of bounds write with ioctl FBIOPUT_VSCREENINFO
(bnc#1201635).
- CVE-2022-1462: Fixed an out-of-bounds read flaw in the TTY subsystem
(bnc#1198829).
- CVE-2022-26365, CVE-2022-33740, CVE-2022-33741, CVE-2022-33742: Fixed
multiple potential data leaks with Block and Network devices when using
untrusted backends (bsc#1200762).
- CVE-2022-2318: Fixed a use-after-free vulnerability in the timer handler
in Rose subsystem that allowed unprivileged attackers to crash the
system (bsc#1201251).
- CVE-2021-39713: Fixed a race condition in the network scheduling
subsystem which could lead to a use-after-free (bnc#1196973).
The following non-security bugs were fixed:
- kvm: emulate: Do not adjust size of fastop and setcc subroutines
(bsc#1201930).
- kvm: emulate: Fix SETcc emulation function offsets with SLS
(bsc#1201930).
Special Instructions and Notes:
Please reboot the system after installing this update.
Patch Instructions:
To install this SUSE 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:
- SUSE Linux Enterprise Server 12-SP2-BCL:
zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2022-2721=1
Package List:
- SUSE Linux Enterprise Server 12-SP2-BCL (x86_64):
kernel-default-4.4.121-92.181.1
kernel-default-base-4.4.121-92.181.1
kernel-default-base-debuginfo-4.4.121-92.181.1
kernel-default-debuginfo-4.4.121-92.181.1
kernel-default-debugsource-4.4.121-92.181.1
kernel-default-devel-4.4.121-92.181.1
kernel-syms-4.4.121-92.181.1
- SUSE Linux Enterprise Server 12-SP2-BCL (noarch):
kernel-devel-4.4.121-92.181.1
kernel-macros-4.4.121-92.181.1
kernel-source-4.4.121-92.181.1
References:
https://www.suse.com/security/cve/CVE-2020-15393.html
https://www.suse.com/security/cve/CVE-2020-36557.html
https://www.suse.com/security/cve/CVE-2020-36558.html
https://www.suse.com/security/cve/CVE-2021-33655.html
https://www.suse.com/security/cve/CVE-2021-33656.html
https://www.suse.com/security/cve/CVE-2021-39713.html
https://www.suse.com/security/cve/CVE-2022-1462.html
https://www.suse.com/security/cve/CVE-2022-20166.html
https://www.suse.com/security/cve/CVE-2022-2318.html
https://www.suse.com/security/cve/CVE-2022-26365.html
https://www.suse.com/security/cve/CVE-2022-33740.html
https://www.suse.com/security/cve/CVE-2022-33741.html
https://www.suse.com/security/cve/CVE-2022-33742.html
https://www.suse.com/security/cve/CVE-2022-36946.html
https://bugzilla.suse.com/1173514
https://bugzilla.suse.com/1196973
https://bugzilla.suse.com/1198829
https://bugzilla.suse.com/1200598
https://bugzilla.suse.com/1200762
https://bugzilla.suse.com/1200910
https://bugzilla.suse.com/1201251
https://bugzilla.suse.com/1201429
https://bugzilla.suse.com/1201635
https://bugzilla.suse.com/1201636
https://bugzilla.suse.com/1201742
https://bugzilla.suse.com/1201752
https://bugzilla.suse.com/1201930
https://bugzilla.suse.com/1201940
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