An issue was discovered in the Linux kernel before 4.18.7. In block/blk-core.c, there is an __blk_drain_queue() use-after-free because a certain error case is mishandled.Referenceshttps://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7https://github.com/torvalds/linux/commit/54648cf1ec2d7f4b6a71767799c45676a138ca24https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54648cf1ec2d7f4b6a71767799c45676a138ca24https://usn.ubuntu.com/4094-1/https://seclists.org/bugtraq/2019/Aug/18https://www.debian.org/security/2019/dsa-4497https://seclists.org/bugtraq/2019/Aug/26https://lists.debian.org/debian-lts-announce/2019/08/msg00017.htmlhttp://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.htmlhttps://usn.ubuntu.com/4116-1/https://usn.ubuntu.com/4118-1/https://security.netapp.com/advisory/ntap-20190905-0002/http://packetstormsecurity.com/files/154408/Kernel-Live-Patch-Security-Notice-LSN-0055-1.htmlhttps://support.f5.com/csp/article/K14673240?utm_source=f5support&%3Butm_medium=RSShttps://access.redhat.com/errata/RHSA-2019:3076https://access.redhat.com/errata/RHSA-2019:3055https://access.redhat.com/errata/RHSA-2019:3089http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.htmlhttps://access.redhat.com/errata/RHSA-2019:3217https://access.redhat.com/errata/RHSA-2020:0100https://access.redhat.com/errata/RHSA-2020:0103https://access.redhat.com/errata/RHSA-2020:0543https://access.redhat.com/errata/RHSA-2020:0664https://access.redhat.com/errata/RHSA-2020:0698
