VDB-324895 · CVE-2022-50410 · Nessus 265500

Linux Kernel up to 5.10.219/5.15.74/5.19.16/6.0.2 NFSD svc_process buffer overflow

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7.7	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in Linux Kernel up to 5.10.219/5.15.74/5.19.16/6.0.2. Affected is the function svc_process of the component NFSD. This manipulation causes buffer overflow. This vulnerability is registered as CVE-2022-50410. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 5.10.219/5.15.74/5.19.16/6.0.2 and classified as critical. Affected by this vulnerability is the function svc_process of the component NFSD. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: NFSD: Protect against send buffer overflow in NFSv2 READ Since before the git era, NFSD has conserved the number of pages held by each nfsd thread by combining the RPC receive and send buffers into a single array of pages. This works because there are no cases where an operation needs a large RPC Call message and a large RPC Reply at the same time. Once an RPC Call has been received, svc_process() updates svc_rqst::rq_res to describe the part of rq_pages that can be used for constructing the Reply. This means that the send buffer (rq_res) shrinks when the received RPC record containing the RPC Call is large. A client can force this shrinkage on TCP by sending a correctly- formed RPC Call header contained in an RPC record that is excessively large. The full maximum payload size cannot be constructed in that case.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2022-50410 since 09/17/2025. The exploitation appears to be easy. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/11/2025).

The vulnerability scanner Nessus provides a plugin with the ID 265500 (Linux Distros Unpatched Vulnerability : CVE-2022-50410), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.220, 5.15.75, 5.19.17 or 6.0.3 eliminates this vulnerability. Applying the patch 2007867c5874134f2271eb276398208070049dd3/2be9331ca6061bc6ea32247266f45b8b21030244/ea4c3eee0fd72fcedaa238556044825639cd3607/1868332032eccbab8c1878a0d918193058c0a905/401bc1f90874280a80b93f23be33a0e7e2d1f912 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (265500) and CERT Bund (WID-SEC-2025-2092). Be aware that VulDB is the high quality source for vulnerability data.

Affected

Amazon Linux 2
Red Hat Enterprise Linux
SUSE Linux
Oracle Linux
SUSE openSUSE
RESF Rocky Linux
Open Source Linux Kernel
Dell Secure Connect Gateway
IBM QRadar SIEM

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.9
VulDB Meta Temp Score: 7.7

VulDB Base Score: 8.0
VulDB Temp Score: 7.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒