SUSE: 2020:2121-1 Important: Kernel Escalation Risk and Fixes
suse
August 4, 2020
An update that solves 15 vulnerabilities and has 37 fixes is now available
Summary
The SUSE Linux Enterprise 12 SP4 LTSS kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - CVE-2020-0305: In cdev_get of char_dev.c, there is a possible use-after-free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1174462). - CVE-2019-20908: An issue was discovered in drivers/firmware/efi/efi.c where incorrect access permissions for the efivar_ssdt ACPI variable could be used by attackers to bypass lockdown or secure boot restrictions, aka CID-1957a85b0032 (bnc#1173567). - CVE-2020-15780: An issue was discovered in drivers/acpi/acpi_configfs.c where injection of malicious ACPI tables via configfs could be used by
References
#1051510 #1065729 #1071995 #1085030 #1104967
#1114279 #1144333 #1148868 #1150660 #1152107
#1152472 #1152624 #1158983 #1159058 #1161016
#1162002 #1162063 #1168081 #1169194 #1169514
#1169795 #1170011 #1170592 #1170618 #1171124
#1171424 #1171558 #1171673 #1171732 #1171761
#1171868 #1171904 #1172257 #1172344 #1172458
#1172484 #1172759 #1172775 #1172781 #1172782
#1172783 #1172999 #1173265 #1173280 #1173428
#1173462 #1173514 #1173567 #1173573 #1174115
#1174462 #1174543
Cross- CVE-2019-16746 CVE-2019-20810 CVE-2019-20908
CVE-2020-0305 CVE-2020-10766 CVE-2020-10767
CVE-2020-10768 CVE-2020-10769 CVE-2020-10773
CVE-2020-12771 CVE-2020-12888 CVE-2020-13974
CVE-2020-14416 CVE-2020-15393 CVE-2020-15780
...
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Severity
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Critical
Announcement ID: SUSE-SU-2020:2121-1
Rating: important
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