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.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

No data.

References
Link Providers
https://git.kernel.org/stable/c/1868332032eccbab8c1878a0d918193058c0a905 cve-icon cve-icon
https://git.kernel.org/stable/c/2007867c5874134f2271eb276398208070049dd3 cve-icon cve-icon
https://git.kernel.org/stable/c/2be9331ca6061bc6ea32247266f45b8b21030244 cve-icon cve-icon
https://git.kernel.org/stable/c/401bc1f90874280a80b93f23be33a0e7e2d1f912 cve-icon cve-icon
https://git.kernel.org/stable/c/ea4c3eee0fd72fcedaa238556044825639cd3607 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025091853-CVE-2022-50410-edee@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-50410 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-50410 cve-icon
History

Wed, 14 Jan 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Thu, 11 Dec 2025 14:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-787
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

 cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Fri, 19 Sep 2025 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Fri, 19 Sep 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Moderate

Thu, 18 Sep 2025 16:15:00 +0000

Type Values Removed Values Added
Description 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.
Title NFSD: Protect against send buffer overflow in NFSv2 READ
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-09-18T16:03:54.612Z

Updated: 2026-01-14T19:13:08.902Z

Reserved: 2025-09-17T14:53:07.002Z

Link: CVE-2022-50410

cve-icon Vulnrichment

Updated: 2026-01-14T19:08:36.168Z

cve-icon NVD

Status : Modified

Published: 2025-09-18T16:15:44.260

Modified: 2026-01-14T20:15:53.623

Link: CVE-2022-50410

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-09-18T00:00:00Z

Links: CVE-2022-50410 - Bugzilla