CVEvulnerability

CVE-2022-43945

7.5 HIGH Published 2022-11-04 Modified 2026-10-14 Official page ↗
Status
Modified
Published
2022-11-04
Last modified
2026-10-14
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-131, CWE-770

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 configurations

• linux linux kernel (< 5.19.17) • linux linux kernel (>= 6.0 < 6.0.2) • netapp active iq unified manager • netapp h300s firmware • netapp h500s firmware • netapp h700s firmware • netapp h410s firmware • netapp h410c firmware

Related

Weakness · CWE (2)

  • CWE-131 Incorrect Calculation of Buffer Size weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling weakness

References