Vulnerability in Linux

CVE-2025-40080

In the Linux kernel, the following vulnerability has been resolved: nbd: restrict sockets to TCP and UDP Recently, syzbot started to abuse NBD with all kinds of sockets. Commit cf1b2326b734 ("nbd: verify socket is supported during setup") made sure the socket supported a shutdown() method. Explicitely accept TCP and UNIX stream sockets.

EPSS: 0.002 (9.3th percentile) — read the EPSS interpretation.

Affected products

  • Linux — versions 5.3.9, 4.19.82, 6.17.3

References