CVE-2019-6974
Published: February 15, 2019Last modified: April 24, 2024
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.1 |
| Attack Vector | NETWORK |
| Attack complexity | HIGH |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | Stream | linux-lts | Not affected (6.1.33-r0) |
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/
- 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/