CVE-2026-49430

The ZFSIOCRECVNEW ioctl, in the heal receive path, similarly truncated a 64-bit payload size to a 32-bit integer for allocation, then used the original 64-bit size as the length for a byteswap operation. A local user with the "receive" delegated ZFS permission can trigger kernel memory corruption...

CVE-2026-49430

CVE-2026-49430 is a kernel memory corruption vulnerability in the OpenZFS component of FreeBSD , specifically in the ZFS_IOC_RECV_NEW ioctl within the heal receive path. The root cause is an integer truncation : a 64-bit payload size is truncated to 32 bits for buffer allocation, but the original...