0.0
NA
CVE-2025-38089
SunRPC Authentication Error Handling Remote Crash Vulnerability
Description

In the Linux kernel, the following vulnerability has been resolved: sunrpc: handle SVC_GARBAGE during svc auth processing as auth error tianshuo han reported a remotely-triggerable crash if the client sends a kernel RPC server a specially crafted packet. If decoding the RPC reply fails in such a way that SVC_GARBAGE is returned without setting the rq_accept_statp pointer, then that pointer can be dereferenced and a value stored there. If it's the first time the thread has processed an RPC, then that pointer will be set to NULL and the kernel will crash. In other cases, it could create a memory scribble. The server sunrpc code treats a SVC_GARBAGE return from svc_authenticate or pg_authenticate as if it should send a GARBAGE_ARGS reply. RFC 5531 says that if authentication fails that the RPC should be rejected instead with a status of AUTH_ERR. Handle a SVC_GARBAGE return as an AUTH_ERROR, with a reason of AUTH_BADCRED instead of returning GARBAGE_ARGS in that case. This sidesteps the whole problem of touching the rpc_accept_statp pointer in this situation and avoids the crash.

INFO

Published Date :

June 30, 2025, 8:15 a.m.

Last Modified :

July 3, 2025, 9:15 a.m.

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Remotely Exploitable :

No

Impact Score :

Exploitability Score :

Public PoC/Exploit Available at Github

CVE-2025-38089 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2025-38089 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-38089.

URL Resource
https://git.kernel.org/stable/c/353e75b55e583635bf71cde6abcec274dba05edd
https://git.kernel.org/stable/c/599c489eea793821232a2f69a00fa57d82b0ac98
https://git.kernel.org/stable/c/94d10a4dba0bc482f2b01e39f06d5513d0f75742
https://git.kernel.org/stable/c/c90459cd58bb421d275337093d8e901e0ba748dd
https://github.com/keymaker-arch/NFSundown
https://www.openwall.com/lists/oss-security/2025/07/02/2

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
keymaker-arch/NFSundown

PoC for CVE-2025-38089

Python

Updated: 1 week, 3 days ago
6 stars 0 fork 0 watcher
Born at : July 2, 2025, 8:40 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
nomi-sec/PoC-in-GitHub

📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.

security cve exploit poc vulnerability

Updated: 6 days, 11 hours ago
7107 stars 1189 fork 1189 watcher
Born at : Dec. 8, 2019, 1:03 p.m. This repo has been linked 804 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-38089 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2025-38089 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Jul. 03, 2025

    Action Type Old Value New Value
    Added Reference https://github.com/keymaker-arch/NFSundown
    Added Reference https://www.openwall.com/lists/oss-security/2025/07/02/2
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Jun. 30, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: sunrpc: handle SVC_GARBAGE during svc auth processing as auth error tianshuo han reported a remotely-triggerable crash if the client sends a kernel RPC server a specially crafted packet. If decoding the RPC reply fails in such a way that SVC_GARBAGE is returned without setting the rq_accept_statp pointer, then that pointer can be dereferenced and a value stored there. If it's the first time the thread has processed an RPC, then that pointer will be set to NULL and the kernel will crash. In other cases, it could create a memory scribble. The server sunrpc code treats a SVC_GARBAGE return from svc_authenticate or pg_authenticate as if it should send a GARBAGE_ARGS reply. RFC 5531 says that if authentication fails that the RPC should be rejected instead with a status of AUTH_ERR. Handle a SVC_GARBAGE return as an AUTH_ERROR, with a reason of AUTH_BADCRED instead of returning GARBAGE_ARGS in that case. This sidesteps the whole problem of touching the rpc_accept_statp pointer in this situation and avoids the crash.
    Added Reference https://git.kernel.org/stable/c/353e75b55e583635bf71cde6abcec274dba05edd
    Added Reference https://git.kernel.org/stable/c/599c489eea793821232a2f69a00fa57d82b0ac98
    Added Reference https://git.kernel.org/stable/c/94d10a4dba0bc482f2b01e39f06d5513d0f75742
    Added Reference https://git.kernel.org/stable/c/c90459cd58bb421d275337093d8e901e0ba748dd
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-38089 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-38089 weaknesses.

NONE - Vulnerability Scoring System
: