ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2022-43945

The Linux kernel NFSD implementation prior to versions 5.19.17 and 6.0.2 are vulnerable to buffer overflow.

Published Nov 4, 2022 · catalog updated Oct 14, 2026 · Arch Linux Arch Linux

Check this week

CVE-2022-43945 is not in CISA KEV. FIRST estimates a 22.39% chance of exploitation in the next 30 days. Check whether you run Arch Linux Arch Linux.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
22.39%
Remediation
Advisory link
Affected products
cpe linux/linux kernel · cpe netapp/active iq unified manager · cpe netapp/h300s firmware · cpe netapp/h410c firmware · cpe netapp/h410s firmware · cpe netapp/h500s firmware

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe linux/linux kernelversion unspecified
  • cpe netapp/active iq unified managerversion unspecified
  • cpe netapp/h300s firmwareversion unspecified
  • cpe netapp/h410c firmwareversion unspecified
  • cpe netapp/h410s firmwareversion unspecified
  • cpe netapp/h500s firmwareversion unspecified
  • cpe netapp/h700s firmwareversion unspecified

How to fix CVE-2022-43945

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2022-43945 is not in CISA KEV. FIRST estimates a 22.39% chance of exploitation in the next 30 days. Check whether you run Arch Linux Arch Linux.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-131; CWE-770: Allocation of Resources Without Limits or Throttling. EPSS 22.39%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 4, 2022 · NIST NVD

    Detected

    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.

  2. Oct 14, 2026 · NIST NVD

    Updated

    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.

Sources

  • Arch Linux SecurityVendor advisoryCVE-2022-43945

    CVE-2022-43945 is named on the public Arch Linux Security page.

    security.archlinux.org
  • CVE.orgVulnerability recordCVE-2022-43945

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-43945

    30-day exploitation probability 22.4%

    first.org
  • NIST NVDVulnerability recordCVE-2022-43945

    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 c

    nvd.nist.gov
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/171289/Kernel-Live-Patch-Security-Notice-LNS-0092-1.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.