Allocation of Resources Without Limits or Throttling Affecting kernel-debug-debuginfo package, versions <0:4.18.0-425.13.1.el8_7


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.16% (54th percentile)

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  • Snyk IDSNYK-ROCKY8-KERNELDEBUGDEBUGINFO-3329286
  • published3 Feb 2023
  • disclosed4 Nov 2022

Introduced: 4 Nov 2022

CVE-2022-43945  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 kernel-debug-debuginfo to version 0:4.18.0-425.13.1.el8_7 or higher.
This issue was patched in RLSA-2023:0832.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debug-debuginfo package and not the kernel-debug-debuginfo package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

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

CVSS Scores

version 3.1