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NULL Pointer Dereference Affecting kernel-rt-debug package, versions <0:3.10.0-693.rt56.617.el7

Severity

 Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-RHEL7-KERNELRTDEBUG-5198309
  • published 26 Jul 2021
  • disclosed 3 Mar 2017
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Introduced: 3 Mar 2017

CVE-2017-6951 Open this link in a new tab
CWE-476 Open this link in a new tab

How to fix?

Upgrade RHEL:7 kernel-rt-debug to version 0:3.10.0-693.rt56.617.el7 or higher.
This issue was patched in RHSA-2017:2077.

NVD Description

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

The keyring_search_aux function in security/keys/keyring.c in the Linux kernel through 3.14.79 allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a request_key system call for the "dead" type.