Out-of-bounds Read Affecting kernel-debug package, versions <0:3.10.0-123.4.2.el7


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.18% (57th percentile)

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  • Snyk IDSNYK-CENTOS7-KERNELDEBUG-2033358
  • published26 Jul 2021
  • disclosed13 Apr 2014

Introduced: 13 Apr 2014

CVE-2014-3145  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Centos:7 kernel-debug to version 0:3.10.0-123.4.2.el7 or higher.

NVD Description

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

The BPF_S_ANC_NLATTR_NEST extension implementation in the sk_run_filter function in net/core/filter.c in the Linux kernel through 3.14.3 uses the reverse order in a certain subtraction, which allows local users to cause a denial of service (over-read and system crash) via crafted BPF instructions. NOTE: the affected code was moved to the __skb_get_nlattr_nest function before the vulnerability was announced.

CVSS Scores

version 3.1