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Use After Free Affecting kernel-rt-modules package, versions <0:5.14.0-162.22.2.rt21.186.el9_1

Severity

 Recommended
0.0
high
0
10

Based on AlmaLinux security rating

    Threat Intelligence

    Exploit Maturity
    Mature
    EPSS
    0.08% (37th percentile)

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  • Snyk ID SNYK-ALMALINUX9-KERNELRTMODULES-5660021
  • published 28 May 2023
  • disclosed 27 Mar 2023
Report a new vulnerability Found a mistake?

Introduced: 27 Mar 2023

CVE-2023-0266 Open this link in a new tab
CWE-416 Open this link in a new tab

How to fix?

Upgrade AlmaLinux:9 kernel-rt-modules to version 0:5.14.0-162.22.2.rt21.186.el9_1 or higher.
This issue was patched in ALSA-2023:1469.

NVD Description

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

A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel. SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result in a priviledge escalation to gain ring0 access from the system user. We recommend upgrading past commit 56b88b50565cd8b946a2d00b0c83927b7ebb055e

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

7.8 high