SUSE Linux: 2021:3969-1 Important Kernel Update and Fixes
suse
December 7, 2021
An update that solves 37 vulnerabilities and has 21 fixes is now available
Summary
The SUSE Linux Enterprise 15 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-2018-3639: Fixed a speculative execution that may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis. (bsc#1087082) - CVE-2021-20320: Fix a bug that allows a local attacker with special user privilege can circumvent the verifier and may lead to a confidentiality problem. (bsc#1190601)
Topics Covered
References
#1085235 #1085308 #1087078 #1087082 #1100394
#1102640 #1105412 #1108488 #1129898 #1133374
#1171420 #1173489 #1174161 #1181854 #1184804
#1185377 #1185726 #1185758 #1186109 #1186482
#1188172 #1188563 #1188601 #1188838 #1188876
#1188983 #1188985 #1189057 #1189262 #1189291
#1189399 #1189400 #1189706 #1189846 #1189884
#1190023 #1190025 #1190067 #1190117 #1190159
#1190351 #1190479 #1190534 #1190601 #1190717
#1191193 #1191315 #1191317 #1191790 #1191800
#1191961 #1192045 #1192267 #1192379 #1192400
#1192775 #1192781 #1192802
Cross- CVE-2018-3639 CVE-2018-9517 CVE-2019-3874
CVE-2019-3900 CVE-2020-12770 CVE-2020-3702
CVE-2021-0941 CVE-2021-20320 CVE-2021-20322
CVE-2021-22543 CVE-2021-31916 CVE-2021-33033
...
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Severity
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Critical
Announcement ID: SUSE-SU-2021:3969-1
Rating: important
Topics Covered
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