CVE-2026-72150
Received Received - Intake

BaseFortify

Publication date: 2026-08-15

Last updated on: 2026-08-15

Assigner: kernel.org

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.

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Meta Information

Published
2026-08-15
Last Modified
2026-08-15
Generated
2026-08-15
AI Q&A
2026-08-15
EPSS Evaluated
N/A
NVD
CVE-2026-72150
EUVD
EUVD-2026-58908

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is a Linux kernel vulnerability where the xprt_create_args structure is allocated on the stack without initialization. Some fields are manually set but critical ones like srcaddr, bc_xps, and flags contain uninitialized stack garbage. This can cause kernel panic, information leaks, or unpredictable behavior when the transport setup code uses these garbage values.

Detection Guidance

This vulnerability involves uninitialized memory in the Linux kernel's sunrpc module. Detection requires checking kernel logs for crashes or errors related to sunrpc or xprt_create_args. Use commands like dmesg | grep -i sunrpc or journalctl -k | grep -i sunrpc to inspect kernel logs for suspicious activity.

Impact Analysis

The vulnerability can cause system crashes (kernel panic) if the kernel tries to use uninitialized memory. It may also leak sensitive data from the stack or lead to erratic system behavior due to random flag values affecting transport setup.

Mitigation Strategies

Apply the latest kernel update from your Linux distribution to patch this vulnerability. If immediate patching is not possible, monitor for kernel panics or unusual behavior in sunrpc-related services. Restart affected services after applying updates.

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