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NULL Pointer Dereference Affecting kernel-uek-debug package, versions <0:2.6.39-400.305.1.el5uek

Severity

high

    Threat Intelligence

    EPSS
    0.25% (65th percentile)

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  • Snyk ID SNYK-ORACLE5-KERNELUEKDEBUG-2543141
  • published 10 Apr 2022
  • disclosed 2 Apr 2018
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Introduced: 2 Apr 2018

CVE-2018-1092 Open this link in a new tab
CWE-476 Open this link in a new tab

How to fix?

Upgrade Oracle:5 kernel-uek-debug to version 0:2.6.39-400.305.1.el5uek or higher.
This issue was patched in ELSA-2019-4317.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-debug package and not the kernel-uek-debug package as distributed by Oracle. See How to fix? for Oracle:5 relevant fixed versions and status.

The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a root directory with a zero i_links_count, which allows attackers to cause a denial of service (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image.

References

CVSS Scores

version 3.1
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Snyk

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

5.5 medium
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SUSE

4.4 medium
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Red Hat

4.6 medium