kernel is vulnerable to arbitrary code execution. The vulnerability exists through a use after free caused by a race condition in smp_task_timedout()
and smp_task_done()
in drivers/scsi/libsas/sas_expander.c
which allows an attacker to execute arbitrary codes.
lists.opensuse.org/opensuse-security-announce/2019-07/msg00014.html
lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.html
www.securityfocus.com/bid/108196
access.redhat.com/articles/5442481
access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.9_release_notes/index
access.redhat.com/errata/RHSA-2020:4062
access.redhat.com/security/updates/classification/#important
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b90cd6f2b905905fb42671009dc0e27c310a16ae
github.com/torvalds/linux/commit/b90cd6f2b905905fb42671009dc0e27c310a16ae
lists.debian.org/debian-lts-announce/2019/08/msg00016.html
lists.debian.org/debian-lts-announce/2019/08/msg00017.html
seclists.org/bugtraq/2019/Aug/13
seclists.org/bugtraq/2019/Aug/18
security.netapp.com/advisory/ntap-20190719-0003/
support.f5.com/csp/article/K11225249
usn.ubuntu.com/4076-1/
www.debian.org/security/2019/dsa-4495
www.debian.org/security/2019/dsa-4497