CVE-2022-2196
HighA regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM (L0) advertising eIBRS support to L1. An attacker at L2 with code execution can execute code on an indirect branch on the host machine. We recommend upgrading to Kernel 6.2 or applying the relevant stable backports (v5.4.233, v5.10.170, v5.15.96, v6.1.14).
CVSS 3.1 score
8.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness type
CWE-1188CVE-2022-2196 is classified as CWE-1188
See CWE-1188 on MITRE CWE for full details on this weakness type.
Affected versions
Linux kernel versions
5.4.47,
5.6.19,
5.7.3,
5.8.0,
5.11.0,
5.16.0
and later are affected. Fixed in
6.2.0
and their respective stable series.
References
8 total-
Mailing List Patch Vendor Advisory
-
Patch Third Party Advisory
-
-
-
Frequently asked questions
-
What is CVE-2022-2196?
CVE-2022-2196 is a High severity Linux kernel vulnerability with a CVSS score of 8.8 out of 10 . It affects Linux kernel versions from 5.4.47 onward and has been patched in 6.2.0. CVE-2022-2196 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
What is the CVSS score for CVE-2022-2196?
CVE-2022-2196 has a CVSS score of 8.8 out of 10, rated High severity (CVSS 3.1). The vector string is
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. -
Is there a patch available for CVE-2022-2196?
Yes. CVE-2022-2196 has been patched. Fixed versions include 6.2.0. If you are running Linux kernel 5.4.47 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2022-2196 actively exploited?
No. CVE-2022-2196 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.