Use After Free Affecting kernel-rt-kvm package, versions <0:3.10.0-957.12.1.rt56.927.el7
Threat Intelligence
EPSS
0.13% (48th
percentile)
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Test your applications- Snyk ID SNYK-CENTOS7-KERNELRTKVM-2134265
- published 26 Jul 2021
- disclosed 7 Feb 2019
Introduced: 7 Feb 2019
CVE-2019-7221 Open this link in a new tabHow to fix?
Upgrade Centos:7 kernel-rt-kvm to version 0:3.10.0-957.12.1.rt56.927.el7 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-kvm package and not the kernel-rt-kvm package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
The KVM implementation in the Linux kernel through 4.20.5 has a Use-after-Free.
References
- 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://security.netapp.com/advisory/ntap-20190404-0002/
- https://support.f5.com/csp/article/K08413011
- https://access.redhat.com/security/cve/CVE-2019-7221
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KDOXCX3QFVWYXH5CQMGDDE7H6MUG5XGG/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y2HMABEMJDPA6LPCBE5WIEZXUKY7DLTN/
- http://packetstormsecurity.com/files/151713/KVM-VMX-Preemption-Timer-Use-After-Free.html
- https://github.com/torvalds/linux/commits/master/arch/x86/kvm
- http://www.openwall.com/lists/oss-security/2019/02/18/2
- 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://access.redhat.com/errata/RHBA-2019:0959
- https://access.redhat.com/errata/RHSA-2019:0833
- http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00042.html
- 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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KDOXCX3QFVWYXH5CQMGDDE7H6MUG5XGG/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y2HMABEMJDPA6LPCBE5WIEZXUKY7DLTN/
CVSS Scores
version 3.1