Executive Summary

Informations
Name CVE-2018-20856 First vendor Publication 2019-07-26
Vendor Cve Last vendor Modification 2023-11-07

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 7.8
Base Score 7.8 Environmental Score 7.8
impact SubScore 5.9 Temporal Score 7.8
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 4.6 Attack Range Local
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20856

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-416 Use After Free

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Os 3164

Sources (Detail)

https://support.f5.com/csp/article/K14673240?utm_source=f5support&amp%3Bu...
Source Url
BUGTRAQ https://seclists.org/bugtraq/2019/Aug/18
https://seclists.org/bugtraq/2019/Aug/26
CONFIRM https://security.netapp.com/advisory/ntap-20190905-0002/
DEBIAN https://www.debian.org/security/2019/dsa-4497
MISC http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slack...
http://packetstormsecurity.com/files/154408/Kernel-Live-Patch-Security-Notice...
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice...
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54...
https://github.com/torvalds/linux/commit/54648cf1ec2d7f4b6a71767799c45676a138...
MLIST https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html
REDHAT https://access.redhat.com/errata/RHSA-2019:3055
https://access.redhat.com/errata/RHSA-2019:3076
https://access.redhat.com/errata/RHSA-2019:3089
https://access.redhat.com/errata/RHSA-2019:3217
https://access.redhat.com/errata/RHSA-2020:0100
https://access.redhat.com/errata/RHSA-2020:0103
https://access.redhat.com/errata/RHSA-2020:0543
https://access.redhat.com/errata/RHSA-2020:0664
https://access.redhat.com/errata/RHSA-2020:0698
UBUNTU https://usn.ubuntu.com/4094-1/
https://usn.ubuntu.com/4116-1/
https://usn.ubuntu.com/4118-1/

Alert History

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  • First insertion