6.5

CVE-2021-28038: debian debian_linux

Modified
AliasesUBUNTU-CVE-2021-28038DEBIAN-CVE-2021-28038
Published 05-03-2021Last modified 03-08-2024

Vulnerability summary

CVE-2021-28038 is a medium (CVSS 6.5) vulnerability in debian debian_linux. EPSS estimates a 0.71% chance of exploitation in the next 30 days, higher than 53.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.71%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 28 · Related 24
DLA-2586-1DLA-2610-1MGASA-2021-0117MGASA-2021-0152OPENSUSE-SU-2021:0532-1OPENSUSE-SU-2021:0758-1

Timeline

  1. 05-03-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.71%

Chance of exploitation in the next 30 days

Percentile

54%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.71% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu49 products
  • linuxAll versions (No fix recorded) | < 4.4.0-208.240 | < 4.15.0-143.147 | < 5.4.0-73.82
  • linux-aws< 4.4.0-1090.94 | < 4.4.0-1126.140 | < 4.15.0-1102.109 | < 5.4.0-1048.50
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.3All versions (No fix recorded)
  • linux-aws-5.4< 5.4.0-1048.50~18.04.1
Debian2 products
Netapp2 products
Linux1 product
  • linux_kernel≥ 2.6.39, < 4.4.260 | ≥ 4.5.0, < 4.9.260 | ≥ 4.10.0, < 4.14.224 | ≥ 4.15.0, < 4.19.179 | ≥ 4.20.0, < 5.4.103 | ≥ 5.10.0, < 5.10.21 | ≥ 5.11.0, < 5.11.4 | 5.12:rc1 | 5.12:rc2

4 vendors · 54 products

References

16 links
Show all 16 references