Incorrect Check of Function Return Value Affecting kernel package, versions <0:3.10.0-327.28.2.el7


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.05% (19th percentile)

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  • Snyk ID SNYK-RHEL7-KERNEL-5130006
  • published 26 Jul 2021
  • disclosed 15 Jun 2016

How to fix?

Upgrade RHEL:7 kernel to version 0:3.10.0-327.28.2.el7 or higher.
This issue was patched in RHSA-2016:1539.

NVD Description

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

The key_reject_and_link function in security/keys/key.c in the Linux kernel through 4.6.3 does not ensure that a certain data structure is initialized, which allows local users to cause a denial of service (system crash) via vectors involving a crafted keyctl request2 command.

References