CVE-2023-39902: A software vulnerability has been identified in the U-Boot Secondary Program Loader (SPL) before 2023.07 on se

Q: How do I fix CVE-2023-39902?

uboot secondary program loader: upgrade to 2023.07. Exact commands for each OS are on this page.

Q: Is CVE-2023-39902 being exploited?

CVE-2023-39902 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-39902 affect?

CVE-2023-39902 affects uboot secondary program loader. Severity is high (CVSS 7.0). A software vulnerability has been identified in the U-Boot Secondary Program Loader (SPL) before 2023.07 on select NXP i.MX 8M family processors. Under certain conditions, a crafted Flattened Image Tree (FIT) format structure can be used to

Routine

HIGH 7.0UPGRADE

CVE-2023-39902 is a high-severity flaw (CVSS 7.0) affecting uboot secondary program loader. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A software vulnerability has been identified in the U-Boot Secondary Program Loader (SPL) before 2023.07 on select NXP i.MX 8M family processors. Under certain conditions, a crafted Flattened Image Tree (FIT) format structure can be used to overwrite SPL memory, allowing unauthenticated software to execute on the target, leading to privilege escalation. This affects i.MX 8M, i.MX 8M Mini, i.MX 8M Nano, and i.MX 8M Plus.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.0 (High)
Attack vector	Local
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 93%)
CISA exploited list	No
Weakness	CWE-281
Published	2023-10-17
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nxp

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-10-17 12:15 UTCPublished CVE record published
2026-06-17 06:12 UTCUpdated Record last modified

nxp uboot secondary program loader UPGRADE

Affected: < 2023.07

Fixed in: 2023.07

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-39902?

uboot secondary program loader: upgrade to 2023.07. Exact commands for each OS are on this page.

Is CVE-2023-39902 being exploited?

CVE-2023-39902 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-39902 affect?

CVE-2023-39902 affects uboot secondary program loader. Severity is high (CVSS 7.0). A software vulnerability has been identified in the U-Boot Secondary Program Loader (SPL) before 2023.07 on select NXP i.MX 8M family processors. Under certain conditions, a crafted Flattened Image Tree (FIT) format structure can be used to

How urgent is CVE-2023-39902?

Priority 26/100. High severity

References

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