Is CVE-2021-46967 in the CISA KEV catalog?

No. CVE-2021-46967 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-46967?

CVE-2021-46967 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2021-46967?

CVE-2021-46967 has an EPSS score of 0.22% (13th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-46967?

Upgrade linux on debian 11 to 5.10.38-1 or later.

CVE & CISA-KEV Catalog

CVE-2021-46967

MEDIUM

5.5

CVSS v3

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: vhost-vdpa: fix vm_flags for virtqueue doorbell mapping The virtqueue doorbell is usually implemented via registeres but we don't provide the necessary vma->flags like VM_PFNMAP. This may cause several issues e.g when userspace tries to map the doorbell via vhost IOTLB, kernel may panic due to the page is not backed by page structure. This patch fixes this by setting the necessary vm_flags. With this patch, try to map doorbell via IOTLB will fail with bad address.

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.38-1CVE-2021-46967

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.22%probability of exploitation in 30 days

13thpercentile

Low risk: more likely to be exploited than 13% of all known CVEs.

References

Patch4

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-12-06.