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


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    1.16% (86th percentile)

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  • Snyk ID SNYK-RHEL7-KERNELRT-5199038
  • published 26 Jul 2021
  • disclosed 4 Feb 2017

How to fix?

Upgrade RHEL:7 kernel-rt 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 package and not the kernel-rt package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

The ipv4_pktinfo_prepare function in net/ipv4/ip_sockglue.c in the Linux kernel through 4.9.9 allows attackers to cause a denial of service (system crash) via (1) an application that makes crafted system calls or possibly (2) IPv4 traffic with invalid IP options.