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SUSE: 2021:3935-1 Important Kernel Update For Security Fixes

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Calendar Grey December 6, 2021
Scroller Suse
SUSE Security Announcement: Critical patches addressing Linux kernel security flaws and enhancing system reliability now ready for system administrators.
An update that solves 38 vulnerabilities and has 18 fixes is now available

Summary

The SUSE Linux Enterprise 12 SP3 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-2021-31916: 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 to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel

Topics%20covered

Topics Covered

security advisory kernel update important system stability SUSE security patches

References

#1073928 #1098425 #1100416 #1119934 #1129735

#1171217 #1171420 #1173346 #1176724 #1177666

#1181158 #1181854 #1181855 #1183089 #1184673

#1185726 #1185727 #1185758 #1185973 #1186109

#1186390 #1188172 #1188563 #1188601 #1188838

#1188876 #1188983 #1188985 #1189057 #1189262

#1189278 #1189291 #1189399 #1189420 #1189706

#1190022 #1190023 #1190025 #1190067 #1190117

#1190159 #1190194 #1190349 #1190351 #1190601

#1190717 #1191193 #1191315 #1191790 #1191801

#1191958 #1191961 #1192267 #1192400 #1192775

#1192781

Cross- CVE-2017-17862 CVE-2017-17864 CVE-2018-13405

CVE-2018-16882 CVE-2020-0429 CVE-2020-12655

CVE-2020-14305 CVE-2020-3702 CVE-2020-4788

CVE-2021-20265 CVE-2021-20322 CVE-2021-31916

CV...

Read the Full Advisory

Severity
important
Lowest
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Critical

Announcement ID: SUSE-SU-2021:3935-1
Rating: important

Topics%20covered

Topics Covered

security advisory kernel update important system stability SUSE security patches

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