CVE-2026-74627 net: devmem: prevent net-iov / page mixing

In the Linux kernel, the following vulnerability has been resolved: net: devmem: prevent net-iov / page mixing We should either have netiov or page backed frags in a single skb, otherwise it blows up down the stack. Don't allow mixing in zerocopyfillskbfromdevmem...

The vulnerability of the skb_append_pagefrags() function in the net/core/skbuff.c module, which is part of Linux’s kernel network functions, allows a hacker to cause a service failure.

The vulnerability of the skbAppendPageFrags function in the net/core/skbuff.c module, which is part of Linux’s kernel network functions, is related to insufficient resource management during its existence. Exploiting this vulnerability could allow an attacker to cause service failures...