CVE-2022-27540 Race condition in HP PC BIOS

High 7.8 Published 28 Jun 2024 Updated 22 Aug 2024

A TOCTOU race condition in HP PC BIOS allows attackers to execute arbitrary code, cause denial of service, or disclose information.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-27540?

CVE-2022-27540 is a high-severity vulnerability in HP PC BIOS, published on 28 Jun 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A potential Time-of-Check to Time-of Use (TOCTOU) vulnerability has been identified in the HP BIOS for certain HP PC products, which might allow arbitrary code execution, denial of service, and information disclosure. HP is releasing BIOS updates to mitigate the potential vulnerability.

Weakness: CWE-367

Which versions are affected by CVE-2022-27540?

It affects 353 products.

Products include Hp Dragonfly Folio 13.5 Inch G3 2-in-1 Notebook Pc Firmware, Hp Elite Dragonfly 13.5 Inch G3 Notebook Pc Firmware, Hp Elite Dragonfly Firmware, Hp Elite Dragonfly G2 Firmware, Hp Elite Dragonfly Max Firmware, Hp Elite Mini 600 G9 Desktop Pc Firmware and 347 more.

How do I fix CVE-2022-27540?

No fix has been published for CVE-2022-27540 yet. Limit exposure of the affected software until one is available.

Is CVE-2022-27540 being exploited?

There is no known exploitation of CVE-2022-27540 in the wild and no public exploit code.

Sources

Also known as GHSA-gfx2-f362-7f24.