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.

No CVSS v4.0

No CVSS v3.1

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Access Vector Local

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00095.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
n/a n/a affected
Version Status Constraints
n/a affected —

Configuration 1 [-]

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Package CPE Advisory Released Date
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-1062.4.1.rt56.1027.el7 cpe:/a:redhat:rhel_extras_rt:7 RHSA-2019:3089 2019-10-16T00:00:00Z
kernel-0:3.10.0-1062.4.1.el7 cpe:/o:redhat:enterprise_linux:7 RHSA-2019:3055 2019-10-16T00:00:00Z
kpatch-patch cpe:/o:redhat:enterprise_linux:7 RHSA-2019:3076 2019-10-16T00:00:00Z
kernel-alt-0:4.14.0-115.14.1.el7a cpe:/o:redhat:enterprise_linux:7 RHSA-2019:3217 2019-10-29T00:00:00Z
Red Hat Enterprise Linux 7.4 Advanced Update Support
kernel-0:3.10.0-693.62.1.el7 cpe:/o:redhat:rhel_aus:7.4 RHSA-2020:0103 2020-01-14T00:00:00Z
Red Hat Enterprise Linux 7.4 Telco Extended Update Support
kernel-0:3.10.0-693.62.1.el7 cpe:/o:redhat:rhel_tus:7.4 RHSA-2020:0103 2020-01-14T00:00:00Z
Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions
kernel-0:3.10.0-693.62.1.el7 cpe:/o:redhat:rhel_e4s:7.4 RHSA-2020:0103 2020-01-14T00:00:00Z
Red Hat Enterprise Linux 7.5 Extended Update Support
kernel-0:3.10.0-862.48.1.el7 cpe:/o:redhat:rhel_eus:7.5 RHSA-2020:0543 2020-02-19T00:00:00Z
Red Hat Enterprise Linux 7.6 Extended Update Support
kernel-0:3.10.0-957.46.1.el7 cpe:/o:redhat:rhel_eus:7.6 RHSA-2020:0664 2020-03-03T00:00:00Z
kpatch-patch cpe:/o:redhat:rhel_eus:7.6 RHSA-2020:0698 2020-03-03T00:00:00Z
Red Hat Enterprise MRG 2
kernel-rt-1:3.10.0-693.62.1.rt56.659.el6rt cpe:/a:redhat:enterprise_mrg:2:server:el6 RHSA-2020:0100 2020-01-14T00:00:00Z
Red Hat Virtualization 4.2 for Red Hat Enterprise Linux 7.6 EUS
kernel-0:3.10.0-957.46.1.el7 cpe:/o:redhat:enterprise_linux:7::hypervisor RHSA-2020:0664 2020-03-03T00:00:00Z

No data.

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-1885-1 linux-4.9 security update
Debian DSA Debian DSA DSA-4497-1 linux security update
EUVD EUVD EUVD-2018-13396 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.
Ubuntu USN Ubuntu USN USN-4094-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-4116-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-4118-1 Linux kernel (AWS) vulnerabilities
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html cve-icon cve-icon
http://packetstormsecurity.com/files/154408/Kernel-Live-Patch-Security-Notice-LSN-0055-1.html cve-icon cve-icon
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2019:3055 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2019:3076 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2019:3089 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2019:3217 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2020:0100 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2020:0103 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2020:0543 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2020:0664 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2020:0698 cve-icon cve-icon
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7 cve-icon cve-icon
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54648cf1ec2d7f4b6a71767799c45676a138ca24 cve-icon cve-icon
https://github.com/torvalds/linux/commit/54648cf1ec2d7f4b6a71767799c45676a138ca24 cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2018-20856 cve-icon
https://seclists.org/bugtraq/2019/Aug/18 cve-icon cve-icon
https://seclists.org/bugtraq/2019/Aug/26 cve-icon cve-icon
https://security.netapp.com/advisory/ntap-20190905-0002/ cve-icon cve-icon
https://support.f5.com/csp/article/K14673240?utm_source=f5support&amp%3Butm_medium=RSS cve-icon cve-icon
https://usn.ubuntu.com/4094-1/ cve-icon cve-icon
https://usn.ubuntu.com/4116-1/ cve-icon cve-icon
https://usn.ubuntu.com/4118-1/ cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2018-20856 cve-icon
https://www.debian.org/security/2019/dsa-4497 cve-icon cve-icon
History

No history.

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-05T12:12:29.597Z

Reserved: 2019-07-26T00:00:00.000Z

Link: CVE-2018-20856

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2019-07-26T05:15:10.517

Modified: 2024-11-21T04:02:19.420

Link: CVE-2018-20856

cve-icon Redhat

Severity : Important

Publid Date: 2019-07-26T00:00:00Z

Links: CVE-2018-20856 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses