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Improper Input Validation Affecting kernel-rt package, versions <0:3.10.0-327.36.1.rt56.237.el7

Severity

 Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    Exploit Maturity
    Mature
    EPSS
    0.04% (1st percentile)

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  • Snyk ID SNYK-RHEL7-KERNELRT-4635378
  • published 26 Jul 2021
  • disclosed 24 Jun 2016
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Introduced: 24 Jun 2016

CVE-2016-4997 Open this link in a new tab
CWE-20 Open this link in a new tab

How to fix?

Upgrade RHEL:7 kernel-rt to version 0:3.10.0-327.36.1.rt56.237.el7 or higher.
This issue was patched in RHSA-2016:1875.

NVD Description

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

The compat IPT_SO_SET_REPLACE and IP6T_SO_SET_REPLACE setsockopt implementations in the netfilter subsystem in the Linux kernel before 4.6.3 allow local users to gain privileges or cause a denial of service (memory corruption) by leveraging in-container root access to provide a crafted offset value that triggers an unintended decrement.

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