SUSE-SU-2021:4021-1
SUSE-SU-2021:4021-1 · Security update for the Linux Kernel (Live Patch 25 for SLE 12 SP5)
This page contains facts from public vulnerability sources. Check the original advisory before updating.
This update for the Linux Kernel 4.12.14-122_98 fixes several issues. The following security issues 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-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790) - CVE-2021-0935: In ip6_xmit of ip6_output.c, there is a possible out of bounds write 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. (bsc#1192032)
Fix available
- Published
- Updated
Stack: system
Affected products and versions
kgraft-patch-sle12-sp5_update_25 SUSE:Linux Enterprise Live Patching 12 SP5
- Affected ranges
- ECOSYSTEM: < 2-2.1
Update to 2-2.1
Original sources
- https://www.suse.com/support/update/announcement/2021/suse-su-20214021-1/
- https://bugzilla.suse.com/1191813
- https://bugzilla.suse.com/1192042
- https://bugzilla.suse.com/1192048
- https://www.suse.com/security/cve/CVE-2021-0935
- https://www.suse.com/security/cve/CVE-2021-0941
- https://www.suse.com/security/cve/CVE-2021-20322
- https://osv.dev/vulnerability/SUSE-SU-2021:4021-1