CVE-2018-20836
High
CVE-2018-20836
An issue was discovered in the Linux kernel before 4.20. There is a race condition in smp_task_timedout() and smp_task_done() in drivers/scsi/libsas/sas_expander.c, leading to a use-after-free.
Exploit probability
5.1%
Published
May 7, 2019
Required by
Not available
Last source change
April 2, 2026
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2018-20836
View original source
An issue was discovered in the Linux kernel before 4.20. There is a race condition in smp_task_timedout() and smp_task_done() in drivers/scsi/libsas/sas_expander.c, leading to a use-after-free.
05 / REFERENCES
Further evidence
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00014.html
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.html
- http://www.securityfocus.com/bid/108196
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b90cd6f2b905905fb42671009dc0e27c310a16ae
- https://github.com/torvalds/linux/commit/b90cd6f2b905905fb42671009dc0e27c310a16ae
- https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html
- https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html
- https://seclists.org/bugtraq/2019/Aug/13
- https://seclists.org/bugtraq/2019/Aug/18
- https://security.netapp.com/advisory/ntap-20190719-0003/
- https://support.f5.com/csp/article/K11225249
- https://usn.ubuntu.com/4076-1/
- https://www.debian.org/security/2019/dsa-4495
- https://www.debian.org/security/2019/dsa-4497