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Use After Free Affecting kernel-debug-debuginfo package, versions <0:4.18.0-372.9.1.el8

Severity

 Recommended
high

Based on Rocky Linux security rating

    Threat Intelligence

    EPSS
    0.05% (18th percentile)

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  • Snyk ID SNYK-ROCKY8-KERNELDEBUGDEBUGINFO-3191618
  • published 5 Jan 2023
  • disclosed 3 Nov 2021
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Introduced: 3 Nov 2021

CVE-2020-27820 Open this link in a new tab
CWE-416 Open this link in a new tab

How to fix?

Upgrade Rocky-Linux:8 kernel-debug-debuginfo to version 0:4.18.0-372.9.1.el8 or higher.
This issue was patched in RLSA-2022:1988.

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.

A vulnerability was found in Linux kernel, where a use-after-frees in nouveau's postclose() handler could happen if removing device (that is not common to remove video card physically without power-off, but same happens if "unbind" the driver).

References

CVSS Scores

version 3.1
Expand this section

NVD

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

SUSE

3.1 low
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Red Hat

4.1 medium