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CVE-2022-50345
NFSD: Protect against send buffer overflow in NFSv3 READ
Description

Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

INFO

Published Date :

Sept. 16, 2025, 5:15 p.m.

Last Modified :

Sept. 29, 2025, 7:15 p.m.

Remotely Exploit :

No

Source :

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

The following products are affected by CVE-2022-50345 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
Solution
Update the Linux kernel to prevent NFSv3 READ operations from causing buffer overflows.
  • Apply kernel patches for NFSv3 READ vulnerability.
  • Update the Linux kernel to the latest version.
  • Restart NFS services after updating.
  • Monitor system stability post-update.

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).

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

The following list is the news that have been mention CVE-2022-50345 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2022-50345 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 Rejected by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Sep. 29, 2025

    Action Type Old Value New Value
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Sep. 29, 2025

    Action Type Old Value New Value
    Changed Description In the Linux kernel, the following vulnerability has been resolved: NFSD: Protect against send buffer overflow in NFSv3 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. Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
    Removed Reference kernel.org: https://git.kernel.org/stable/c/309f29361b6bfae96936317376f1114568c5de19
    Removed Reference kernel.org: https://git.kernel.org/stable/c/75d9de25a6f833dd0701ca546ac926cabff2b5af
    Removed Reference kernel.org: https://git.kernel.org/stable/c/bc6c0ed253cd4763dba7541d558e4b704f33176f
    Removed Reference kernel.org: https://git.kernel.org/stable/c/c23687911f82a63fa2977ce9c992b395e90f8ba0
    Removed Reference kernel.org: https://git.kernel.org/stable/c/fa6be9cc6e80ec79892ddf08a8c10cabab9baf38
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Sep. 16, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: NFSD: Protect against send buffer overflow in NFSv3 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.
    Added Reference https://git.kernel.org/stable/c/309f29361b6bfae96936317376f1114568c5de19
    Added Reference https://git.kernel.org/stable/c/75d9de25a6f833dd0701ca546ac926cabff2b5af
    Added Reference https://git.kernel.org/stable/c/bc6c0ed253cd4763dba7541d558e4b704f33176f
    Added Reference https://git.kernel.org/stable/c/c23687911f82a63fa2977ce9c992b395e90f8ba0
    Added Reference https://git.kernel.org/stable/c/fa6be9cc6e80ec79892ddf08a8c10cabab9baf38
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.
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.