The vulnerability of the dsp_mmap_single() function in the operating system kernel of FreeBSD allows a hacker to cause a service failure.

The vulnerability of the dspmmapsingle function in the operating system kernels of FreeBSD is related to reading data beyond the allowed range of memory. Exploiting this vulnerability can allow an attacker to cause a service failure...

CVE-2026-45258: Out-of-bounds Read

dspmmapsingle validated the requested mapping by checking the sum of the user-supplied offset and length against the buffer size. This addition could overflow, so that a large offset and length wrapped around and passed the check. The offset was then narrowed from 64 to 32 bits when converted to ...