Vulnerability Details : CVE-2020-26541
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.
Products affected by CVE-2020-26541
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-26541
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 17 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-26541
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.9
|
MEDIUM | AV:L/AC:M/Au:N/C:C/I:C/A:C |
3.4
|
10.0
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H |
0.6
|
5.9
|
MITRE | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H |
0.6
|
5.9
|
NIST |
References for CVE-2020-26541
-
https://lkml.org/lkml/2020/9/15/1871
LKML: Eric Snowberg: [PATCH v4] certs: Add EFI_CERT_X509_GUID support for dbx entriesExploit;Vendor Advisory
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