CVE-2019-6974 EXPLOIT
8.1
HIGH · CVSS 3.1 · EPSS 16.5% (pctl 97)
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 8.1 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 16.52% — more likely to be exploited than 97% of all CVEs |
| Weakness | CWE-362 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2019-02-15 |
| Last modified | 2026-06-17 |
Affected (24)
| Vendor | Product |
|---|---|
| canonical | ubuntu linux |
| debian | debian linux |
| 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 |
| linux | linux kernel |
| redhat | enterprise linux |
| redhat | enterprise linux desktop |
| redhat | enterprise linux eus |
| redhat | enterprise linux server |
| redhat | enterprise linux server aus |
| redhat | enterprise linux server eus |
| redhat | enterprise linux server tus |
| redhat | enterprise linux workstation |
| redhat | openshift container platform |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Linux - 'kvm_ioctl_create_device()' NULL Pointer Dereference | 2019-02-15 |
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://access.redhat.com/errata/RHSA-2019:3967
- https://access.redhat.com/errata/RHSA-2020:0103
- 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://support.f5.com/csp/article/K11186236?utm_source=f5support&%3Butm_medium=RSS
- https://usn.ubuntu.com/3930-1/
→ the Explorer · watch your stack · NVD