CVE-2026-72150

Technical Description

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

sunrpc: fix uninitialized xprt_create_args structure

The xprt_create_args structure is allocated on the stack without

initialization in rpc_sysfs_xprt_switch_add_xprt_store(). While some

fields are manually populated, critical fields like srcaddr, bc_xps,

and flags contain uninitialized stack garbage.

This can lead to:

1. Kernel panic when xs_setup_xprt() dereferences garbage srcaddr

2. Information leak if srcaddr points to sensitive stack data

3. Unpredictable behavior if flags has random bits set

The fix is to zero-initialize the structure to ensure all unused

fields are NULL/0, preventing the transport setup code from acting

on garbage data.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References