CVE-2020-26541 — MEDIUM (6.5)

Q: What is CVE-2020-26541?

CVE-2020-26541 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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.

Q: How severe is CVE-2020-26541?

CVE-2020-26541 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2020-26541?

Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.

Vulnerability 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 Score

6.5

MEDIUM

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Linux	Linux Kernel	<= 5.8.13

References

https://lkml.org/lkml/2020/9/15/1871ExploitVendor Advisory
https://lkml.org/lkml/2020/9/15/1871ExploitVendor Advisory

FAQ

What is CVE-2020-26541?

CVE-2020-26541 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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.

How severe is CVE-2020-26541?

CVE-2020-26541 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-26541?

Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.