CVE-2019-6974high
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.
References
https://github.com/torvalds/linux/commit/cfa39381173d5f969daf43582c95ad679189cbc9
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://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.21
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.99
https://bugs.chromium.org/p/project-zero/issues/detail?id=1765
https://www.exploit-db.com/exploits/46388/
http://www.securityfocus.com/bid/107127
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
https://usn.ubuntu.com/3933-2/
https://usn.ubuntu.com/3932-2/
https://usn.ubuntu.com/3932-1/
https://usn.ubuntu.com/3931-2/
https://usn.ubuntu.com/3931-1/
https://usn.ubuntu.com/3930-2/
https://usn.ubuntu.com/3930-1/
https://usn.ubuntu.com/3933-1/
https://support.f5.com/csp/article/K11186236
https://access.redhat.com/errata/RHSA-2019:0833
https://access.redhat.com/errata/RHSA-2019:0818
https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
https://access.redhat.com/errata/RHBA-2019:0959
https://access.redhat.com/errata/RHSA-2019:2809
https://support.f5.com/csp/article/K11186236?utm_source=f5support&utm_medium=RSS
Details
Source: MITRE
Published: 2019-02-15
Updated: 2022-04-05
Type: CWE-362
Risk Information
CVSS v2
Base Score: 6.8
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 8.6
Severity: MEDIUM
CVSS v3
Base Score: 8.1
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 2.2
Severity: HIGH