Vulnerability CVE-2019-6974

Vulnerability CVE-2019-6974

Published: 2019-02-15

Description:

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.

Type:

CWE-362

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score	Impact Subscore	Exploitability Subscore
6.8/10	6.4/10	8.6/10

Exploit range	Attack complexity	Authentication
Remote	Medium	No required
Confidentiality impact	Integrity impact	Availability impact
Partial	Partial	Partial

Affected software
Redhat -> Openshift container platform
Redhat -> Enterprise linux
Redhat -> Enterprise linux desktop
Redhat -> Enterprise linux server
Redhat -> Enterprise linux server aus
Redhat -> Enterprise linux server eus
Redhat -> Enterprise linux server tus
Redhat -> Enterprise linux workstation
Redhat -> Virtualization
Linux -> Linux kernel
F5 -> Big-ip access policy manager
F5 -> Big-ip advanced firewall manager
F5 -> Big-ip analytics
F5 -> Big-ip application acceleration manager
F5 -> Big-ip application security manager
F5 -> Big-ip edge gateway
F5 -> Big-ip fraud protection service
F5 -> Big-ip global traffic manager
F5 -> Big-ip link controller
F5 -> Big-ip local traffic manager
F5 -> Big-ip policy enforcement manager
F5 -> Big-ip webaccelerator
Debian -> Debian linux
Canonical -> Ubuntu linux

References:

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cfa39381173d5f969daf43582c95ad679189cbc9

http://www.securityfocus.com/bid/107127

https://access.redhat.com/errata/RHBA-2019:0959

https://access.redhat.com/errata/RHSA-2019:0818

https://access.redhat.com/errata/RHSA-2019:0833

https://access.redhat.com/errata/RHSA-2019:2809

https://bugs.chromium.org/p/project-zero/issues/detail?id=1765

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-4.20.8

https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.156

https://github.com/torvalds/linux/commit/cfa39381173d5f969daf43582c95ad679189cbc9

https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html

https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html

https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html

https://support.f5.com/csp/article/K11186236

https://usn.ubuntu.com/3930-1/

https://usn.ubuntu.com/3930-2/

https://usn.ubuntu.com/3931-1/

https://usn.ubuntu.com/3931-2/

https://usn.ubuntu.com/3932-1/

https://usn.ubuntu.com/3932-2/

https://usn.ubuntu.com/3933-1/

https://usn.ubuntu.com/3933-2/

https://www.exploit-db.com/exploits/46388/

Vulnerability 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.

CWE-362

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

6.8/10

6.4/10

8.6/10

Remote

Medium

No required

Partial

Partial

Partial

Affected software

References: