CVE-2021-28038

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.70% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 52.9% of scored records. A rank, not a probability.

NVD base score

6.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-03-05 00:00Z5 YR AGO

Last updated

2024-08-03 21:33Z2 YR AGO

Reserved

2021-03-05

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-770Allocation of Resources Without Limits or ThrottlingBase

Data version

5.1

Document digest

328c084cdee6f5e3fabf8f2a7a61082a545f6af09e7f95445dbe8dc05f9c004d

• xenbits.xen.orghttp://xenbits.xen.org/xsa/advisory-367.html
• www.openwall.com[oss-security] 20210305 Xen Security Advisory 367 v2 (CVE-2021-28038) - Linux: netback fails to honor grant mapping errorshttp://www.openwall.com/lists/oss-security/2021/03/05/1mailing-list
• lists.debian.org[debian-lts-announce] 20210309 [SECURITY] [DLA 2586-1] linux security updatehttps://lists.debian.org/debian-lts-announce/2021/03/msg00010.htmlmailing-list
• lists.debian.org[debian-lts-announce] 20210330 [SECURITY] [DLA 2610-1] linux-4.19 security updatehttps://lists.debian.org/debian-lts-announce/2021/03/msg00035.htmlmailing-list
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20210409-0001/
• git.kernel.orghttps://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2991397d23ec597405b116d96de3813420bdcbc3