Off-by-one Error Affecting perf package, versions <0:2.6.32-71.7.1.el6


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-CENTOS6-PERF-2034702
  • published26 Jul 2021
  • disclosed27 Aug 2010

Introduced: 27 Aug 2010

CVE-2010-2955  (opens in a new tab)
CWE-193  (opens in a new tab)

How to fix?

Upgrade Centos:6 perf to version 0:2.6.32-71.7.1.el6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by Centos. See How to fix? for Centos:6 relevant fixed versions and status.

The cfg80211_wext_giwessid function in net/wireless/wext-compat.c in the Linux kernel before 2.6.36-rc3-next-20100831 does not properly initialize certain structure members, which allows local users to leverage an off-by-one error in the ioctl_standard_iw_point function in net/wireless/wext-core.c, and obtain potentially sensitive information from kernel heap memory, via vectors involving an SIOCGIWESSID ioctl call that specifies a large buffer size.

CVSS Scores

version 3.1