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Allocation of Resources Without Limits or Throttling Affecting perf package, versions <0:5.14.0-162.12.1.el9_1

Severity

 Recommended
0.0
high
0
10

Based on AlmaLinux security rating

    Threat Intelligence

    EPSS
    0.16% (54th percentile)

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  • Snyk ID SNYK-ALMALINUX9-PERF-5656162
  • published 28 May 2023
  • disclosed 23 Jan 2023
Report a new vulnerability Found a mistake?

Introduced: 23 Jan 2023

CVE-2022-43945 Open this link in a new tab
CWE-770 Open this link in a new tab

How to fix?

Upgrade AlmaLinux:9 perf to version 0:5.14.0-162.12.1.el9_1 or higher.
This issue was patched in ALSA-2023:0334.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 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
Expand this section

NVD

7.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
Expand this section

SUSE

8.8 high
Expand this section

Red Hat

7.5 high