CVE-2022-50410

Advisory lineage Upstream: 0 Downstream: 17
Modified
Published: 18 Sept 2025, 16:03
Last modified:11 May 2026, 19:18

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (cve.org)
EPSS Score
0.02% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

18 Sept 2025, 16:03
Published
Vulnerability first disclosed
11 May 2026, 19:18
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.02%• Percentile: 5%

Techniques & Countermeasures

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • linux•linux

    ≥ 4452435948424e5322c2a2fefbdc2cf3732cc45d, < 2007867c5874134f2271eb276398208070049dd3 | ≥ 4452435948424e5322c2a2fefbdc2cf3732cc45d, < 2be9331ca6061bc6ea32247266f45b8b21030244 | ≥ 4452435948424e5322c2a2fefbdc2cf3732cc45d, < ea4c3eee0fd72fcedaa238556044825639cd3607 | ≥ 4452435948424e5322c2a2fefbdc2cf3732cc45d, < 1868332032eccbab8c1878a0d918193058c0a905 | ≥ 4452435948424e5322c2a2fefbdc2cf3732cc45d, < 401bc1f90874280a80b93f23be33a0e7e2d1f912 | 2.6.19

  • linux•linux_kernel

    < 5.10.220 | ≥ 5.11, < 5.15.75 | ≥ 5.16, < 5.19.17 | ≥ 6.0, < 6.0.3

References (5)