National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-20836 Detail

Current Description

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.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 8.1 HIGH
Vector:  CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
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 Patch Vendor Advisory
https://github.com/torvalds/linux/commit/b90cd6f2b905905fb42671009dc0e27c310a16ae Patch Vendor Advisory
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

Weakness Enumeration

CWE-ID CWE Name Source
CWE-416 Use After Free NIST  
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
4.20


Change History

12 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-20836
NVD Published Date:
05/07/2019
NVD Last Modified:
05/08/2019