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Out-of-bounds Read Affecting kernel-rt package, versions <0:3.10.0-514.6.1.rt56.429.el7

Severity

 Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    73.58% (99th percentile)

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  • Snyk ID SNYK-RHEL7-KERNELRT-4641304
  • published 26 Jul 2021
  • disclosed 25 Oct 2016
Report a new vulnerability Found a mistake?

Introduced: 25 Oct 2016

CVE-2016-9555 Open this link in a new tab
CWE-125 Open this link in a new tab

How to fix?

Upgrade RHEL:7 kernel-rt to version 0:3.10.0-514.6.1.rt56.429.el7 or higher.
This issue was patched in RHSA-2017:0091.

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 sctp_sf_ootb function in net/sctp/sm_statefuns.c in the Linux kernel before 4.8.8 lacks chunk-length checking for the first chunk, which allows remote attackers to cause a denial of service (out-of-bounds slab access) or possibly have unspecified other impact via crafted SCTP data.

References

CVSS Scores

version 3.1
Expand this section

NVD

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