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CVE-2022-43945

nvd nist
Published: Nov 4, 2022Modified: May 12, 2026

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 3.9 / Impact: 3.6
Source: NVD

Description

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

Affected (8)

Linux
1 product
Linux Kernel
Netapp
6 products
Active Iq Unified Manager
H300s Firmware
H500s Firmware
H700s Firmware
H410s Firmware
H410c Firmware
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Linux
Linux Kernel
Before 5.19.17
Linux Kernel
From 6.0 to 6.0.2
Configuration B
1 vulnerable
Vulnerable SoftwareAffected Versions
Active Iq Unified Manager
All versions
Configuration C
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
H300s Firmware
All versions
Running on/withPlatform Versions
Netapp
H300s
All versions
Configuration D
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
H500s Firmware
All versions
Running on/withPlatform Versions
Netapp
H500s
All versions
Configuration E
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
H700s Firmware
All versions
Running on/withPlatform Versions
Netapp
H700s
All versions
Configuration F
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
H410s Firmware
All versions
Running on/withPlatform Versions
Netapp
H410s
All versions
Configuration G
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
H410c Firmware
All versions
Running on/withPlatform Versions
Netapp
H410c
All versions

Related CWEs

CWE-131
Incorrect Calculation of Buffer Size
The product does not correctly calculate the size to be used when allocating a buffer, which could lead to a buffer overflow.
CWE-770
Allocation of Resources Without Limits or Throttling
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

References (7)

Source: disclosure@synopsys.com
Source: disclosure@synopsys.com
Mailing ListPatchVendor Advisory
Source: disclosure@synopsys.com
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListPatchVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e

Timeline

No history available yet.