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Vulnerability Details : CVE-2019-6974

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.
Publish Date : 2019-02-15 Last Update Date : 2020-10-15
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- CVSS Scores & Vulnerability Types

CVSS Score
6.8
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 362

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2019:0818: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20190818 unix
RHSA-2019:0833: kernel-rt security and bug fix update (Important) oval:com.redhat.rhsa:def:20190833 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2019-6974

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 12.04 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 14.04 * * * Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 16.04 * * * Version Details Vulnerabilities
4 OS Canonical Ubuntu Linux 18.04 * * * Version Details Vulnerabilities
5 OS Canonical Ubuntu Linux 18.10 * * * Version Details Vulnerabilities
6 OS Debian Debian Linux 8.0 * * * Version Details Vulnerabilities
7 Application F5 Big-ip Access Policy Manager * * * * Version Details Vulnerabilities
8 Application F5 Big-ip Advanced Firewall Manager * * * * Version Details Vulnerabilities
9 Application F5 Big-ip Analytics * * * * Version Details Vulnerabilities
10 Application F5 Big-ip Application Acceleration Manager * * * * Version Details Vulnerabilities
11 Application F5 Big-ip Application Security Manager * * * * Version Details Vulnerabilities
12 Application F5 Big-ip Edge Gateway * * * * Version Details Vulnerabilities
13 Application F5 Big-ip Fraud Protection Service * * * * Version Details Vulnerabilities
14 Application F5 Big-ip Global Traffic Manager * * * * Version Details Vulnerabilities
15 Application F5 Big-ip Link Controller * * * * Version Details Vulnerabilities
16 Application F5 Big-ip Local Traffic Manager * * * * Version Details Vulnerabilities
17 Application F5 Big-ip Policy Enforcement Manager * * * * Version Details Vulnerabilities
18 Application F5 Big-ip Webaccelerator * * * * Version Details Vulnerabilities
19 OS Linux Linux Kernel * * * * Version Details Vulnerabilities
20 OS Redhat Enterprise Linux 7.0 * * * Version Details Vulnerabilities
21 OS Redhat Enterprise Linux Desktop 7.0 * * * Version Details Vulnerabilities
22 OS Redhat Enterprise Linux Server 7.0 * * * Version Details Vulnerabilities
23 OS Redhat Enterprise Linux Server Aus 7.6 * * * Version Details Vulnerabilities
24 OS Redhat Enterprise Linux Server Eus 7.6 * * * Version Details Vulnerabilities
25 OS Redhat Enterprise Linux Server Tus 7.6 * * * Version Details Vulnerabilities
26 OS Redhat Enterprise Linux Workstation 7.0 * * * Version Details Vulnerabilities
27 Application Redhat Openshift Container Platform 3.11 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 5
Debian Debian Linux 1
F5 Big-ip Access Policy Manager 1
F5 Big-ip Advanced Firewall Manager 1
F5 Big-ip Analytics 1
F5 Big-ip Application Acceleration Manager 1
F5 Big-ip Application Security Manager 1
F5 Big-ip Edge Gateway 1
F5 Big-ip Fraud Protection Service 1
F5 Big-ip Global Traffic Manager 1
F5 Big-ip Link Controller 1
F5 Big-ip Local Traffic Manager 1
F5 Big-ip Policy Enforcement Manager 1
F5 Big-ip Webaccelerator 1
Linux Linux Kernel 1
Redhat Enterprise Linux 1
Redhat Enterprise Linux Desktop 1
Redhat Enterprise Linux Server 1
Redhat Enterprise Linux Server Aus 1
Redhat Enterprise Linux Server Eus 1
Redhat Enterprise Linux Server Tus 1
Redhat Enterprise Linux Workstation 1
Redhat Openshift Container Platform 1

- References For CVE-2019-6974

https://usn.ubuntu.com/3933-1/
UBUNTU USN-3933-1
https://access.redhat.com/errata/RHSA-2020:0103
REDHAT RHSA-2020:0103
https://access.redhat.com/errata/RHSA-2019:3967
REDHAT RHSA-2019:3967
https://support.f5.com/csp/article/K11186236?utm_source=f5support&utm_medium=RSS CONFIRM
https://access.redhat.com/errata/RHBA-2019:0959
REDHAT RHBA-2019:0959
https://access.redhat.com/errata/RHSA-2019:2809
REDHAT RHSA-2019:2809
https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
MLIST [debian-lts-announce] 20190503 [SECURITY] [DLA 1771-1] linux-4.9 security update
https://support.f5.com/csp/article/K11186236 CONFIRM
https://access.redhat.com/errata/RHSA-2019:0818
REDHAT RHSA-2019:0818
https://usn.ubuntu.com/3931-1/
UBUNTU USN-3931-1
https://usn.ubuntu.com/3930-2/
UBUNTU USN-3930-2
https://usn.ubuntu.com/3933-2/
UBUNTU USN-3933-2
https://access.redhat.com/errata/RHSA-2019:0833
REDHAT RHSA-2019:0833
https://usn.ubuntu.com/3932-2/
UBUNTU USN-3932-2
https://usn.ubuntu.com/3932-1/
UBUNTU USN-3932-1
https://usn.ubuntu.com/3931-2/
UBUNTU USN-3931-2
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
MLIST [debian-lts-announce] 20190327 [SECURITY] [DLA 1731-1] linux security update
https://usn.ubuntu.com/3930-1/
UBUNTU USN-3930-1
https://www.exploit-db.com/exploits/46388/
EXPLOIT-DB 46388
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
MLIST [debian-lts-announce] 20190401 [SECURITY] [DLA 1731-2] linux regression update
https://bugs.chromium.org/p/project-zero/issues/detail?id=1765
http://www.securityfocus.com/bid/107127
BID 107127 Linux Kernel CVE-2019-6974 Security Bypass Vulnerability Release Date:2019-04-19
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cfa39381173d5f969daf43582c95ad679189cbc9
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://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://github.com/torvalds/linux/commit/cfa39381173d5f969daf43582c95ad679189cbc9

- Metasploit Modules Related To CVE-2019-6974

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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