CVE-2022-50410Network attack vector

Kernel memory corruption via oversized NFSv2 READ

Published Sep 18, 2025 · Updated Sep 18, 2025

Out-of-bounds write in Linux NFSD allows remote attackers to corrupt kernel memory through a crafted NFSv2 READ request over TCP. svc_process() lets an oversized RPC record shrink rq_res, but the NFSv2 READ reply encoder still assumes a full-size payload and writes past the reduced send buffer. The target must expose NFSD with NFSv2 over TCP; the published record does not document the resulting crash or code-execution behavior.

CVSS severity7.8
High
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in Linux NFSD allows remote attackers to corrupt kernel memory through a crafted NFSv2 READ request over TCP. svc_process() lets an oversized RPC record shrink rq_res, but the NFSv2 READ reply encoder still assumes a full-size payload and writes past the reduced send buffer. The target must expose NFSD with NFSv2 over TCP; the published record does not document the resulting crash or code-execution behavior.

The record

CVE
CVE-2022-50410
Published
Sep 18, 2025
Updated
Sep 18, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1868332032eccbab8c1878a0d918193058c0a905
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2007867c5874134f2271eb276398208070049dd3
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2be9331ca6061bc6ea32247266f45b8b21030244
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <401bc1f90874280a80b93f23be33a0e7e2d1f912
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ea4c3eee0fd72fcedaa238556044825639cd3607

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1868332032eccbab8c1878a0d918193058c0a905; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2007867c5874134f2271eb276398208070049dd3; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2be9331ca6061bc6ea32247266f45b8b21030244; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <401bc1f90874280a80b93f23be33a0e7e2d1f912; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ea4c3eee0fd72fcedaa238556044825639cd3607

Published CVSS scores

7.8CISA ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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