CVE-2026-15449

CVE-2026-15449 describes a TOCTOU vulnerability in the illumos data-link pseudo-driver (dld) regarding handling of DLDIOC_GETMACPROP and DLDIOC_SETMACPROP ioctls on /dev/dld. In drv_ioc_prop_common(), the header is read once to obtain pr_valsize, a kernel heap buffer is allocated, and then the fu...