CVE-2026-37540: OpenAMP v2025.10.0 ELF loader contains an integer overflow vulnerability in firmware image parsing

Routine

HIGH 8.4DOWNGRADE

CVE-2026-37540 is a high-severity flaw (CVSS 8.4) affecting openamp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OpenAMP v2025.10.0 ELF loader contains an integer overflow vulnerability in firmware image parsing. In elf_loader.c, it performs multiplication of two attacker-controlled 16-bit values from the ELF header without overflow checking. On 32-bit embedded systems (STM32MP1, Zynq, i.MX), large values can cause the product to wrap around to a small value.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.4 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 83%)
CISA exploited list	No
Weakness	CWE-190
Published	2026-05-01
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: linaro

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

Am I affected?

Timeline

2026-05-01 17:16 UTCPublished CVE record published
2026-06-17 10:41 UTCUpdated Record last modified

linaro openamp DOWNGRADE

Affected: 2025.10.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2025.10.0

1. Check installed version

apt-cache policy openamp || rpm -q openamp || openamp --version

2. No fixed release: DOWNGRADE to a release before 2025.10.0 (Debian / Ubuntu)

apt-cache madison openamp sudo apt install openamp=<VERSION_BEFORE_2025.10.0> sudo apt-mark hold openamp

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list openamp sudo dnf downgrade openamp-<VERSION_BEFORE_2025.10.0> sudo dnf versionlock add openamp

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2026-37540?

openamp: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-37540 being exploited?

CVE-2026-37540 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-2026-37540 affect?

CVE-2026-37540 affects openamp. Severity is high (CVSS 8.4). OpenAMP v2025.10.0 ELF loader contains an integer overflow vulnerability in firmware image parsing. In elf_loader.c, it performs multiplication of two attacker-controlled 16-bit values from the ELF header without overflow checking. On 32-bi

How urgent is CVE-2026-37540?

Priority 34/100. High severity

References

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