In the Linux kernel before 4.20.8, kvm_ioctl_create_device in virt/kvm/kvm_main.c mishandles reference counting because of a race condition, leading to a use-after-free.

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-1731-1 linux security update
Debian DLA Debian DLA DLA-1731-2 linux regression update
Debian DLA Debian DLA DLA-1771-1 linux-4.9 security update
EUVD EUVD EUVD-2019-16527 In the Linux kernel before 4.20.8, kvm_ioctl_create_device in virt/kvm/kvm_main.c mishandles reference counting because of a race condition, leading to a use-after-free.
Ubuntu USN Ubuntu USN USN-3930-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3930-2 Linux kernel (HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-3931-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3931-2 Linux kernel (HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-3932-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3932-2 Linux kernel (Xenial HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-3933-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3933-2 Linux kernel (Trusty HWE) vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

References
Link Providers
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cfa39381173d5f969daf43582c95ad679189cbc9 cve-icon cve-icon
http://www.securityfocus.com/bid/107127 cve-icon cve-icon
https://access.redhat.com/errata/RHBA-2019:0959 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2019:0818 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2019:0833 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2019:2809 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2019:3967 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2020:0103 cve-icon cve-icon
https://bugs.chromium.org/p/project-zero/issues/detail?id=1765 cve-icon cve-icon
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.99 cve-icon cve-icon
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.21 cve-icon cve-icon
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.8 cve-icon cve-icon
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.156 cve-icon cve-icon
https://github.com/torvalds/linux/commit/cfa39381173d5f969daf43582c95ad679189cbc9 cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2019-6974 cve-icon
https://support.f5.com/csp/article/K11186236 cve-icon cve-icon
https://support.f5.com/csp/article/K11186236?utm_source=f5support&amp%3Butm_medium=RSS cve-icon cve-icon
https://usn.ubuntu.com/3930-1/ cve-icon cve-icon
https://usn.ubuntu.com/3930-2/ cve-icon cve-icon
https://usn.ubuntu.com/3931-1/ cve-icon cve-icon
https://usn.ubuntu.com/3931-2/ cve-icon cve-icon
https://usn.ubuntu.com/3932-1/ cve-icon cve-icon
https://usn.ubuntu.com/3932-2/ cve-icon cve-icon
https://usn.ubuntu.com/3933-1/ cve-icon cve-icon
https://usn.ubuntu.com/3933-2/ cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2019-6974 cve-icon
https://www.exploit-db.com/exploits/46388/ cve-icon cve-icon
History

Fri, 11 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.11275}

epss

{'score': 0.08376}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-04T20:38:32.373Z

Reserved: 2019-01-26T00:00:00

Link: CVE-2019-6974

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2019-02-15T15:29:00.250

Modified: 2024-11-21T04:47:20.457

Link: CVE-2019-6974

cve-icon Redhat

Severity : Important

Publid Date: 2019-02-07T00:00:00Z

Links: CVE-2019-6974 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses