CVE-2026-72065 net: mana: Validate the packet length reported by the NIC
A missing validation of packet length in the Linux kernel's MANA network driver allows a malicious NIC to cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-72065?
CVE-2026-72065 is a critical denial of service vulnerability in Linux, published on 15 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
net: mana: Validate the packet length reported by the NIC
Validate the packet length reported in the RX CQE before passing it to skb processing. The CQE is supplied by the NIC device and should not be blindly trusted.
Weakness: CWE-20
Which versions are affected by CVE-2026-72065?
How do I fix CVE-2026-72065?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-72065 being exploited?
There is no known exploitation of CVE-2026-72065 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-72065, DEBIAN-CVE-2026-72065, GHSA-pwf3-8jwg-55rq, UBUNTU-CVE-2026-72065.