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CVE-2023-0386 Affecting kernel-rt-modules-extra package, versions <0:5.14.0-162.23.1.rt21.186.el9_1

Severity

 Recommended
0.0
high
0
10

Based on AlmaLinux security rating

    Threat Intelligence

    EPSS
    0.23% (62nd percentile)

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  • Snyk ID SNYK-ALMALINUX9-KERNELRTMODULESEXTRA-5618404
  • published 28 May 2023
  • disclosed 11 Apr 2023
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Introduced: 11 Apr 2023

CVE-2023-0386 Open this link in a new tab

How to fix?

Upgrade AlmaLinux:9 kernel-rt-modules-extra to version 0:5.14.0-162.23.1.rt21.186.el9_1 or higher.
This issue was patched in ALSA-2023:1691.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-modules-extra package and not the kernel-rt-modules-extra package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

A flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux kernel’s OverlayFS subsystem in how a user copies a capable file from a nosuid mount into another mount. This uid mapping bug allows a local user to escalate their privileges on the system.

References

CVSS Scores

version 3.1
Expand this section

NVD

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

SUSE

7.8 high
Expand this section

Red Hat

7 high