Out-of-bounds Read Affecting kernel-kdump package, versions <0:3.10.0-957.10.1.el7


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.06% (30th percentile)

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  • Snyk IDSNYK-CENTOS7-KERNELKDUMP-2133574
  • published26 Jul 2021
  • disclosed5 Oct 2018

Introduced: 5 Oct 2018

CVE-2018-18445  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Centos:7 kernel-kdump to version 0:3.10.0-957.10.1.el7 or higher.

NVD Description

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

In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjust_scalar_min_max_vals in kernel/bpf/verifier.c mishandles 32-bit right shifts.

CVSS Scores

version 3.1