CVE-2021-27138

The boot loader in Das U-Boot before 2021.04-rc2 mishandles use of unit addresses in a FIT.

CVSS v3 7.8 HIGH
CVSS v2.0 6.8 MEDIUM

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/u-boot/u-boot/commit/3f04db891a353f4b127ed57279279f851c6b4917	Patch Third Party Advisory
https://github.com/u-boot/u-boot/commit/79af75f7776fc20b0d7eb6afe1e27c00fdb4b9b4	Patch Third Party Advisory
https://github.com/u-boot/u-boot/commit/b6f4c757959f8850e1299a77c8e5713da78e8ec0	Patch Third Party Advisory
https://github.com/u-boot/u-boot/commit/3f04db891a353f4b127ed57279279f851c6b4917	Patch Third Party Advisory
https://github.com/u-boot/u-boot/commit/79af75f7776fc20b0d7eb6afe1e27c00fdb4b9b4	Patch Third Party Advisory
https://github.com/u-boot/u-boot/commit/b6f4c757959f8850e1299a77c8e5713da78e8ec0	Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2025/09/msg00037.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:denx:u-boot::::::::
	cpe:2.3:a:denx:u-boot:2021.04:rc1::::::

History

03 Nov 2025, 19:15

Type	Values Removed	Values Added
References		() https://lists.debian.org/debian-lts-announce/2025/09/msg00037.html -

Information

Published : 2021-02-17 23:15

Updated : 2025-11-03 19:15

NVD link : CVE-2021-27138

Mitre link : CVE-2021-27138

CVE.ORG link : CVE-2021-27138

JSON object : View

Products Affected

denx

u-boot

CWE

NVD-CWE-noinfo

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