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Improper Locking Affecting kernel-debug package, versions <0:3.10.0-693.17.1.el7

Severity

 Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.04% (12th percentile)

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  • Snyk ID SNYK-RHEL7-KERNELDEBUG-4750488
  • published 26 Jul 2021
  • disclosed 9 Dec 2015
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Introduced: 9 Dec 2015

CVE-2015-8539 Open this link in a new tab
CWE-667 Open this link in a new tab

How to fix?

Upgrade RHEL:7 kernel-debug to version 0:3.10.0-693.17.1.el7 or higher.
This issue was patched in RHSA-2018:0151.

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 RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

The KEYS subsystem in the Linux kernel before 4.4 allows local users to gain privileges or cause a denial of service (BUG) via crafted keyctl commands that negatively instantiate a key, related to security/keys/encrypted-keys/encrypted.c, security/keys/trusted.c, and security/keys/user_defined.c.

References

CVSS Scores

version 3.1
Expand this section

NVD

7.8 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High