CVE-2025-68246

Summary

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: close accepted socket when per-IP limit rejects connection

When the per-IP connection limit is exceeded in ksmbd_kthread_fn(), the code sets ret = -EAGAIN and continues the accept loop without closing the just-accepted socket. That leaks one socket per rejected attempt from a single IP and enables a trivial remote DoS.

Release client_sk before continuing.

This bug was found with ZeroPath.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux0626e6641f6b467447c81dd7678a69c66f7746cf < 7a3c7154d5fc05956a8ad9e72ecf49e21555bfcaaffected
LinuxLinux0626e6641f6b467447c81dd7678a69c66f7746cf < 5746b2a0f5eb3d79667b3c51fe849bd62464220eaffected
LinuxLinux0626e6641f6b467447c81dd7678a69c66f7746cf < 4587a7826be1ae0190dba10ff70b46bb0e3bc7d3affected
LinuxLinux0626e6641f6b467447c81dd7678a69c66f7746cf < 35521b5a7e8a184548125f4530552101236dcda1affected
LinuxLinux0626e6641f6b467447c81dd7678a69c66f7746cf < 98a5fd31cbf72d46bf18e50b3ab0ce86d5f319a9affected
LinuxLinux5.15affected
LinuxLinux0 < 5.15unaffected
LinuxLinux6.1.159 <= 6.1.*unaffected
LinuxLinux6.6.117 <= 6.6.*unaffected
LinuxLinux6.12.59 <= 6.12.*unaffected
LinuxLinux6.17.9 <= 6.17.*unaffected
LinuxLinux6.18 <= *unaffected

Weaknesses

References