CVE-2018-20856

Summary

CVECVE-2018-20856
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-07-26 05:15:00 UTC
Updated2023-11-07 02:56:00 UTC
DescriptionAn 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.

Risk And Classification

Problem Types: CWE-416

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All
Operating System Linux Linux Kernel All All All All

References

ReferenceSourceLinkTags
Red Hat Customer Portal REDHAT access.redhat.com
myF5 support.f5.com
cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7 MISC cdn.kernel.org Mailing List, Release Notes, Vendor Advisory
Debian -- Security Information -- DSA-4497-1 linux DEBIAN www.debian.org
block: blk_init_allocated_queue() set q->fq as NULL in the fail case · torvalds/linux@54648cf · GitHub MISC github.com Patch, Third Party Advisory
Red Hat Customer Portal REDHAT access.redhat.com
Slackware Security Advisory - Slackware 14.2 kernel Updates ≈ Packet Storm MISC packetstormsecurity.com
Red Hat Customer Portal REDHAT access.redhat.com
USN-4116-1: Linux kernel vulnerabilities | Ubuntu security notices | Ubuntu UBUNTU usn.ubuntu.com
Red Hat Customer Portal REDHAT access.redhat.com
Red Hat Customer Portal REDHAT access.redhat.com
kernel/git/torvalds/linux.git - Linux kernel source tree MISC git.kernel.org Mailing List, Patch, Vendor Advisory
Red Hat Customer Portal REDHAT access.redhat.com
USN-4118-1: Linux kernel (AWS) vulnerabilities | Ubuntu security notices | Ubuntu UBUNTU usn.ubuntu.com
Red Hat Customer Portal REDHAT access.redhat.com
Bugtraq: [slackware-security] Slackware 14.2 kernel (SSA:2019-226-01) BUGTRAQ seclists.org
USN-4094-1: Linux kernel vulnerabilities | Ubuntu security notices | Ubuntu UBUNTU usn.ubuntu.com
support.f5.com/csp/article/K14673240 CONFIRM support.f5.com
Red Hat Customer Portal REDHAT access.redhat.com
Bugtraq: [SECURITY] [DSA 4497-1] linux security update BUGTRAQ seclists.org
Kernel Live Patch Security Notice LSN-0055-1 ≈ Packet Storm MISC packetstormsecurity.com
[SECURITY] [DLA 1885-1] linux-4.9 security update MLIST lists.debian.org
Kernel Live Patch Security Notice LSN-0058-1 ≈ Packet Storm MISC packetstormsecurity.com
August 2019 Linux Kernel Vulnerabilities in NetApp Products | NetApp Product Security CONFIRM security.netapp.com
Red Hat Customer Portal REDHAT access.redhat.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report