VulnerabilityModified
CVE-2021-27138
The boot loader in Das U-Boot before 2021.04-rc2 mishandles use of unit addresses in a FIT.
HIGH 7.8EPSS 1.10%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.10%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The boot loader in Das U-Boot before 2021.04-rc2 mishandles use of unit addresses in a FIT.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 1.10% probability · 64th percentile
- CISA KEV
- Not listed
- Affected
- denx/u-boot
- Source
- cve@mitre.org
References
- https://github.com/u-boot/u-boot/commit/3f04db891a353f4b127ed57279279f851c6b4917Patch, Third Party Advisory
- https://github.com/u-boot/u-boot/commit/79af75f7776fc20b0d7eb6afe1e27c00fdb4b9b4Patch, Third Party Advisory
- https://github.com/u-boot/u-boot/commit/b6f4c757959f8850e1299a77c8e5713da78e8ec0Patch, Third Party Advisory
- https://github.com/u-boot/u-boot/commit/3f04db891a353f4b127ed57279279f851c6b4917Patch, Third Party Advisory
- https://github.com/u-boot/u-boot/commit/79af75f7776fc20b0d7eb6afe1e27c00fdb4b9b4Patch, Third Party Advisory
- https://github.com/u-boot/u-boot/commit/b6f4c757959f8850e1299a77c8e5713da78e8ec0Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/09/msg00037.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.