CVE-2026-74627 net: devmem: prevent net-iov / page mixing
A flaw in the Linux kernel's devmem networking allows mixing incompatible fragment types, potentially causing memory corruption or crashes.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-74627?
CVE-2026-74627 is a high-severity memory corruption vulnerability in Linux, published on 22 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
net: devmem: prevent net-iov / page mixing
We should either have net_iov or page backed frags in a single skb, otherwise it blows up down the stack. Don't allow mixing in zerocopy_fill_skb_from_devmem().
Which versions are affected by CVE-2026-74627?
How do I fix CVE-2026-74627?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-74627 being exploited?
There is no known exploitation of CVE-2026-74627 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-74627, DEBIAN-CVE-2026-74627, GHSA-78h9-c595-34hg, UBUNTU-CVE-2026-74627.