What is CVE-2021-28038?

CVE-2021-28038 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.5 out of 10. CVE-2021-28038 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-28038?

CVE-2021-28038 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-2021-28038?

No patch is currently available for CVE-2021-28038. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-28038 actively exploited?

CVE-2021-28038 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-28038

Medium

An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV. A certain part of the netback driver lacks necessary treatment of errors such as failed memory allocations (as a result of changes to the handling of grant mapping errors). A host OS denial of service may occur during misbehavior of a networking frontend driver. NOTE: this issue exists because of an incomplete fix for CVE-2021-26931.

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-770

CVE-2021-28038 is classified as CWE-770

See CWE-770 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2021-28038 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Debian Security
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html

Mailing List Third Party Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html

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

Third Party Advisory
Kernel patch commit
http://www.openwall.com/lists/oss-security/2021/03/05/1
Patch
Kernel patch commit
http://xenbits.xen.org/xsa/advisory-367.html
Patch
Kernel patch commit
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2991397d23ec597405b116d96de3813420bdcbc3
Patch

Details

CVE ID CVE-2021-28038

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-2021-28038?

CVE-2021-28038 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.5 out of 10 . CVE-2021-28038 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-28038?

CVE-2021-28038 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-2021-28038?

No patch is currently available for CVE-2021-28038. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-28038 actively exploited?

No — CVE-2021-28038 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.