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SUSE Linux 12 SP4: 2021 3972 1 Important: Security Kernel Update

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Calendar Grey December 8, 2021
Scroller Suse
Ubuntu Server kernel patch: critical updates resolve 35 security flaws, improving overall system protection. Restart needed.
An update that solves 40 vulnerabilities and has 47 fixes is now available

Summary

The SUSE Linux Enterprise 12 SP4 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) The following security bugs were fixed: - 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

Topics%20covered

Topics Covered

security advisory kernel update vulnerability important fix SUSE Linux system security

References

#1087082 #1100416 #1108488 #1129735 #1129898

#1133374 #1153720 #1171420 #1176724 #1176931

#1180624 #1181854 #1181855 #1183050 #1183861

#1184673 #1184804 #1185377 #1185677 #1185726

#1185727 #1185758 #1185973 #1186063 #1186482

#1186483 #1186672 #1188026 #1188172 #1188563

#1188601 #1188613 #1188838 #1188842 #1188876

#1188983 #1188985 #1189057 #1189262 #1189278

#1189291 #1189399 #1189400 #1189418 #1189420

#1189706 #1189846 #1189884 #1190023 #1190025

#1190067 #1190115 #1190117 #1190118 #1190159

#1190276 #1190349 #1190350 #1190351 #1190432

#1190479 #1190534 #1190601 #1190717 #1191193

#1191315 #1191317 #1191318 #1191529 #1191530

#1191628 #1191660 #1191790 #1191801 #1191813

#1191961 #119...

Read the Full Advisory

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Announcement ID: SUSE-SU-2021:3972-1
Rating: important

Topics%20covered

Topics Covered

security advisory kernel update vulnerability important fix SUSE Linux system security

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