Incorrect Permission Assignment for Critical Resource Affecting kernel-debug package, versions <0:3.10.0-693.el7


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-ORACLE7-KERNELDEBUG-2514922
  • published10 Apr 2022
  • disclosed17 Apr 2017

Introduced: 17 Apr 2017

CVE-2017-7889  (opens in a new tab)
CWE-732  (opens in a new tab)

How to fix?

Upgrade Oracle:7 kernel-debug to version 0:3.10.0-693.el7 or higher.
This issue was patched in ELSA-2017-1842.

NVD Description

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

The mm subsystem in the Linux kernel through 3.2 does not properly enforce the CONFIG_STRICT_DEVMEM protection mechanism, which allows local users to read or write to kernel memory locations in the first megabyte (and bypass slab-allocation access restrictions) via an application that opens the /dev/mem file, related to arch/x86/mm/init.c and drivers/char/mem.c.

CVSS Scores

version 3.1