CVE-2019-7221

MEDIUM

Description

The KVM implementation in the Linux kernel through 4.20.5 has a Use-after-Free.

References

http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00042.html

http://packetstormsecurity.com/files/151713/KVM-VMX-Preemption-Timer-Use-After-Free.html

http://www.openwall.com/lists/oss-security/2019/02/18/2

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-2019:3967

https://access.redhat.com/errata/RHSA-2019:4058

https://bugs.chromium.org/p/project-zero/issues/detail?id=1760

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ecec76885bcfe3294685dc363fd1273df0d5d65f

https://github.com/torvalds/linux/commits/master/arch/x86/kvm

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://lists.fedoraproject.org/archives/list/[email protected]/message/KDOXCX3QFVWYXH5CQMGDDE7H6MUG5XGG/

https://lists.fedoraproject.org/archives/list/[email protected]/message/Y2HMABEMJDPA6LPCBE5WIEZXUKY7DLTN/

https://security.netapp.com/advisory/ntap-20190404-0002/

https://support.f5.com/csp/article/K08413011

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/

Details

Source: MITRE

Published: 2019-03-21

Updated: 2020-10-15

Type: CWE-416

Risk Information

CVSS v2.0

Base Score: 4.6

Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3.0

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH