CVE-2022-43945

What it is

The Linux kernel NFSD implementation prior to versions 5.19.17 and 6.0.2 are vulnerable to buffer overflow. NFSD tracks the number of pages held by each NFSD thread by combining the receive and send buffers of a remote procedure call (RPC) into a single array of pages. A client can force the send buffer to shrink by sending an RPC message over TCP with garbage data added at the end of the message. The RPC message with garbage data is still correctly formed according to the specification and is passed forward to handlers. Vulnerable code in NFSD is not expecting the oversized request and writes beyond the allocated buffer space. CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of service disruption.

Exploit odds

5.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2022-11-04 19:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-10-14 19:16 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 5.5% in the next 30 days (EPSS).
• Severity: 7.5 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2022-11-04 19:15 UTC

Last modified

2026-10-14 19:16 UTC

Exploit probability

5.5% · EPSS, next 30 days

Weakness

CWE-131

Record status

Modified

Affected

• Linux Kernel < 5.19.17
• Linux Kernel < 6.0.2
• Netapp Active Iq Unified Manager
• Netapp h300s Firmware
• Netapp h500s Firmware
• Netapp h700s Firmware
• Netapp h410s Firmware
• Netapp h410c Firmware

Attack profile CVSS 3.1 · 7.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2022-43945.md and follow it. Check whether this project is affected by CVE-2022-43945. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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