What is CVE-2021-28039?

CVE-2021-28039 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.5 out of 10. CVE-2021-28039 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-28039?

CVE-2021-28039 has a CVSS score of 6.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.

Is there a patch available for CVE-2021-28039?

No patch is currently available for CVE-2021-28039. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-28039 actively exploited?

CVE-2021-28039 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-28039

Medium

An issue was discovered in the Linux kernel 5.9.x through 5.11.3, as used with Xen. In some less-common configurations, an x86 PV guest OS user can crash a Dom0 or driver domain via a large amount of I/O activity. The issue relates to misuse of guest physical addresses when a configuration has CONFIG_XEN_UNPOPULATED_ALLOC but not CONFIG_XEN_BALLOON_MEMORY_HOTPLUG.

Package Linux Kernel

Published 2021-03-05

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

6.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-131

CVE-2021-28039 is classified as CWE-131

See CWE-131 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2021-28039 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Security
https://security.netapp.com/advisory/ntap-20210409-0001/

Third Party Advisory
Kernel patch commit
http://www.openwall.com/lists/oss-security/2021/03/05/2
Patch
Kernel patch commit
http://xenbits.xen.org/xsa/advisory-369.html
Patch
Kernel patch commit
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=882213990d32fd224340a4533f6318dd152be4b2
Patch

Details

CVE ID CVE-2021-28039

Severity Medium

CVSS score 6.5 / 10

CVSS version 3.1

Published 2021-03-05

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-28039?

CVE-2021-28039 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.5 out of 10 . CVE-2021-28039 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-28039?

CVE-2021-28039 has a CVSS score of 6.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
Is there a patch available for CVE-2021-28039?

No patch is currently available for CVE-2021-28039. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-28039 actively exploited?

No — CVE-2021-28039 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.