CVE-2022-50410

HIGH EPSS 6.7%
Published Sep 18, 20259mo ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published Sep 18, 2025 9mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
6.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel* <5.10.220
linuxlinux_kernel*≥5.11  –  <5.15.75
linuxlinux_kernel*≥5.16  –  <5.19.17
linuxlinux_kernel*≥6.0  –  <6.0.3

References 5

  • git.kernel.org https://git.kernel.org/stable/c/1868332032eccbab8c1878a0d918193058c0a905
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2007867c5874134f2271eb276398208070049dd3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2be9331ca6061bc6ea32247266f45b8b21030244
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/401bc1f90874280a80b93f23be33a0e7e2d1f912
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ea4c3eee0fd72fcedaa238556044825639cd3607
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/1868332032eccbab8c1878a0d918193058c0a905
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2007867c5874134f2271eb276398208070049dd3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2be9331ca6061bc6ea32247266f45b8b21030244
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/401bc1f90874280a80b93f23be33a0e7e2d1f912
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ea4c3eee0fd72fcedaa238556044825639cd3607
    Patch