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NULL Pointer Dereference Affecting kernel-uek package, versions <0:4.1.12-124.24.1.el7uek

Severity

 Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.23% (62nd percentile)

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  • Snyk IDSNYK-ORACLE7-KERNELUEK-2544726
  • published10 Apr 2022
  • disclosed2 Apr 2018
Report a new vulnerability Found a mistake?

Introduced: 2 Apr 2018

CVE-2018-1092  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Oracle:7 kernel-uek to version 0:4.1.12-124.24.1.el7uek or higher.
This issue was patched in ELSA-2019-4315.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek package and not the kernel-uek package as distributed by Oracle. See How to fix? for Oracle:7 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