Vulnerability DatabaseCVE-2019-6974
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CVE-2019-6974
February 15, 2019
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.
Related Resources (32)
https://access.redhat.com/errata/RHSA-2019:2809
https://github.com/torvalds/linux/commit/cfa39381173d5f969daf43582c95ad679189cbc9
https://access.redhat.com/errata/RHSA-2019:3967
https://usn.ubuntu.com/3930-2/
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
https://access.redhat.com/errata/RHSA-2019:0818
https://www.exploit-db.com/exploits/46388/
https://access.redhat.com/errata/RHBA-2019:0959
https://usn.ubuntu.com/3933-1/
https://support.f5.com/csp/article/K11186236?utm_source=f5support&utm_medium=RSS
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
http://www.securityfocus.com/bid/107127
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cfa39381173d5f969daf43582c95ad679189cbc9
https://security-tracker.debian.org/tracker/CVE-2019-6974
https://usn.ubuntu.com/3931-1/
https://usn.ubuntu.com/3932-2/
https://bugs.chromium.org/p/project-zero/issues/detail?id=1765
https://support.f5.com/csp/article/K11186236?utm_source=f5support&amp%3Butm_medium=RSS
https://usn.ubuntu.com/3930-1/
https://usn.ubuntu.com/3931-2/
https://access.redhat.com/security/cve/CVE-2019-6974
https://access.redhat.com/errata/RHSA-2019:0833
https://support.f5.com/csp/article/K11186236
https://access.redhat.com/errata/RHSA-2020:0103
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.156
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.8
https://usn.ubuntu.com/3933-2/
https://usn.ubuntu.com/3932-1/
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.99
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.21
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-6974
https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
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CVSS v4
Base Score:
9.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
CVSS v2
Base Score:
6.8
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Weakness Type (CWE)
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-362
Use After Free
CWE-416
EPSS
Base Score:
7.92