NULL Pointer Dereference Affecting kernel-rt-trace-devel package, versions <0:3.10.0-957.rt56.910.el7


Severity

Recommended
high

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.25% (65th percentile)

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  • Snyk ID SNYK-CENTOS7-KERNELRTTRACEDEVEL-2111558
  • published 26 Jul 2021
  • disclosed 22 Mar 2018

How to fix?

Upgrade Centos:7 kernel-rt-trace-devel to version 0:3.10.0-957.rt56.910.el7 or higher.

NVD Description

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

The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a root directory with a zero i_links_count, which allows attackers to cause a denial of service (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image.