Out-of-bounds Write Affecting kernel-uek-tools-libs package, versions <0:5.4.17-2011.2.2.el7uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.06% (30th percentile)

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  • Snyk IDSNYK-ORACLE7-KERNELUEKTOOLSLIBS-2577007
  • published10 Apr 2022
  • disclosed25 Feb 2020

Introduced: 25 Feb 2020

CVE-2020-9391  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Oracle:7 kernel-uek-tools-libs to version 0:5.4.17-2011.2.2.el7uek or higher.
This issue was patched in ELSA-2020-5691.

NVD Description

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

An issue was discovered in the Linux kernel 5.4 and 5.5 through 5.5.6 on the AArch64 architecture. It ignores the top byte in the address passed to the brk system call, potentially moving the memory break downwards when the application expects it to move upwards, aka CID-dcde237319e6. This has been observed to cause heap corruption with the GNU C Library malloc implementation.

CVSS Scores

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