6.9

CVE-2020-26541: linux linux_kernel

Modified
AliasesUBUNTU-CVE-2020-26541DEBIAN-CVE-2020-26541
Published 02-10-2020Last modified 04-08-2024

Vulnerability summary

CVE-2020-26541 is a medium (CVSS 6.9) vulnerability in linux linux_kernel. EPSS estimates a 0.53% chance of exploitation in the next 30 days, higher than 44.7% of scored vulnerabilities. 1 public exploit is recorded.

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
6.9/10
010
Medium · v2.0 (NVD)
EPSS score
0.53%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 25 · Related 18
MGASA-2021-0347MGASA-2021-0348OPENSUSE-SU-2022:2173-1OPENSUSE-SU-2022:2177-1RHSA-2021:2570RHSA-2021:2599

Timeline

  1. 02-10-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

The Linux kernel through 5.8.13 does not properly enforce the Secure Boot Forbidden Signature Database (aka dbx) protection mechanism. This affects certs/blacklist.c and certs/system_keyring.c.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.53%

Chance of exploitation in the next 30 days

Percentile

45%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.53% 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

1 found
  • referenceUnverified

    Exploit Reference (lkml.org)

    Maturity: unknown

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, administrative account, user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu59 products
  • linuxAll versions (No fix recorded) | < 5.4.0-92.103
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1061.64
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11< 5.11.0-1017.18~20.04.1
  • linux-aws-5.3All versions (No fix recorded)
Debian1 product
  • linux< 5.14.6-1
Linux1 product

3 vendors · 61 products

References

13 links
Show all 13 references