CVE-2025-27723 Use after free in Intel(R) Ethernet 800 series
A use-after-free flaw in the Intel Ethernet 800 series kernel driver allows local attackers to cause a denial of service.
- 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-2025-27723?
CVE-2025-27723 is a medium-severity use after free vulnerability in Intel(R) Ethernet 800 series, published on 12 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Use after free for some Linux kernel driver for the Intel(R) Ethernet 800 series before version 2.3.14 within Ring 0: Kernel may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (high) impacts.
Weakness: CWE-416
Which versions are affected by CVE-2025-27723?
How do I fix CVE-2025-27723?
No fix has been published for CVE-2025-27723 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2025-27723 being exploited?
There is no known exploitation of CVE-2025-27723 in the wild and no public exploit code.
Sources
Also known as GHSA-j2j9-q468-5q3f.