NULL Pointer Dereference Affecting kernel-debug-modules package, versions <0:4.18.0-80.4.2.el8_0


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.08% (37th percentile)

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  • Snyk IDSNYK-ORACLE8-KERNELDEBUGMODULES-2534131
  • published10 Apr 2022
  • disclosed5 Mar 2019

Introduced: 5 Mar 2019

CVE-2019-9213  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Oracle:8 kernel-debug-modules to version 0:4.18.0-80.4.2.el8_0 or higher.
This issue was patched in ELSA-2019-1479.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debug-modules package and not the kernel-debug-modules package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

In the Linux kernel before 4.20.14, expand_downwards in mm/mmap.c lacks a check for the mmap minimum address, which makes it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task.

References

CVSS Scores

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