SUSE-SU-2019:1767-1

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SUSE-SU-2019:1767-1

Summary: Security update for the Linux Kernel (Live Patch 30 for SLE 12 SP2)

Details: This update for the Linux Kernel 4.4.121-92_114 fixes several issues. The following security issues were fixed: - CVE-2019-11487: The Linux kernel allowed page->_refcount reference count overflow, with resultant use-after-free issues, if about 140 GiB of RAM exists. This is related to fs/fuse/dev.c, fs/pipe.c, fs/splice.c, include/linux/mm.h, include/linux/pipe_fs_i.h, kernel/trace/trace.c, mm/gup.c, and mm/hugetlb.c. It can occur with FUSE requests (bsc#1133191). - CVE-2018-5390: Linux kernel could be forced to make very expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of service (bsc#1102682).

References: https://www.suse.com/support/update/announcement/2019/suse-su-20191767-1/, https://bugzilla.suse.com/1102682, https://bugzilla.suse.com/1133191, https://www.suse.com/security/cve/CVE-2018-5390, https://www.suse.com/security/cve/CVE-2019-11487