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NULL Pointer Dereference Affecting bpftool package, versions <0:3.10.0-1062.el7

Severity

 Recommended
high

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-CENTOS7-BPFTOOL-2137953
  • published 26 Jul 2021
  • disclosed 15 Aug 2019
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Introduced: 15 Aug 2019

CVE-2019-10140 Open this link in a new tab
CWE-476 Open this link in a new tab

How to fix?

Upgrade Centos:7 bpftool to version 0:3.10.0-1062.el7 or higher.

NVD Description

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

A vulnerability was found in Linux kernel's, versions up to 3.10, implementation of overlayfs. An attacker with local access can create a denial of service situation via NULL pointer dereference in ovl_posix_acl_create function in fs/overlayfs/dir.c. This can allow attackers with ability to create directories on overlayfs to crash the kernel creating a denial of service (DOS).