Use After Free Affecting kernel-debuginfo-common-x86_64 package, versions <0:4.14.101-75.76.amzn1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-AMZN201803-KERNELDEBUGINFOCOMMONX8664-1716975
- published27 Sept 2021
- disclosed21 Mar 2019
Introduced: 21 Mar 2019
CVE-2019-7221 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2018.03 kernel-debuginfo-common-x86_64 to version 0:4.14.101-75.76.amzn1 or higher.
This issue was patched in ALAS-2019-1165.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debuginfo-common-x86_64 package and not the kernel-debuginfo-common-x86_64 package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2018.03 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
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=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-2019:0818
- https://access.redhat.com/errata/RHSA-2019:0833
- https://access.redhat.com/errata/RHSA-2019:3967
- https://access.redhat.com/errata/RHSA-2019:4058
- 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/