What is CVE-2021-47060?

CVE-2021-47060 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.0 out of 10. CVE-2021-47060 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47060?

CVE-2021-47060 has a CVSS score of 6.0 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H.

Is there a patch available for CVE-2021-47060?

No patch is currently available for CVE-2021-47060. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-47060 actively exploited?

CVE-2021-47060 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47060

Medium

In the Linux kernel, the following vulnerability has been resolved: KVM: Stop looking for coalesced MMIO zones if the bus is destroyed Abort the walk of coalesced MMIO zones if kvm_io_bus_unregister_dev() fails to allocate memory for the new instance of the bus. If it can't instantiate a new bus, unregister_dev() destroys all devices _except_ the target device. But, it doesn't tell the caller that it obliterated the bus and invoked the destructor for all devices that were on the bus. In the coalesced MMIO case, this can result in a deleted list entry dereference due to attempting to continue iterating on coalesced_zones after future entries (in the walk) have been deleted. Opportunistically add curly braces to the for-loop, which encompasses many lines but sneaks by without braces due to the guts being a single if statement.

Package Linux Kernel

Published 2024-02-29

Last modified 2025-04-08

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

6.0

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

References

The following references provide additional information about CVE-2021-47060 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/168e82f640ed1891a700bdb43e37da354b2ab63c
Patch
Kernel patch commit
https://git.kernel.org/stable/c/2a20592baff59c5351c5200ec667e1a2aa22af85
Patch
Kernel patch commit
https://git.kernel.org/stable/c/50cbad42bfea8c052b7ca590bd4126cdc898713c
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2021-47060

Severity Medium

CVSS score 6.0 / 10

CVSS version 3.1

Published 2024-02-29

Modified 2025-04-08

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-47060?

CVE-2021-47060 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.0 out of 10 . CVE-2021-47060 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47060?

CVE-2021-47060 has a CVSS score of 6.0 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H.
Is there a patch available for CVE-2021-47060?

No patch is currently available for CVE-2021-47060. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-47060 actively exploited?

No — CVE-2021-47060 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.