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

The OpenZFS component in FreeBSD contains a kernel memory corruption vulnerability (integer overflow) within the ZFS_IOC_RECV_NEW ioctl in the heal receive path. The issue arises because a 64-bit payload size is truncated to a 32-bit integer for memory allocation, but the original 64-bit size is ...