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CVE Database

CVE-2010-2955

Impact: Moderate
Public: 2010-08-27
Bugzilla: 628434: CVE-2010-2955 kernel: wireless: fix 64K kernel heap content leak via ioctl

Details

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2010-2955 from the MITRE CVE dictionary and NIST NVD.

Statement

This issue did not affect the version of Linux kernel as shipped with Red Hat Enterprise Linux 3, 4, and 5 as they did not backport the upstream commit 3d23e349 that had introduced the problem. A future update in Red Hat Enterprise MRG may address this flaw.

CVSS v2 metrics

Base Score: 2.1
Base Metrics: AV:L/AC:L/Au:N/C:P/I:N/A:N
Access Vector: Local
Access Complexity: Low
Authentication: None
Confidentiality Impact: Partial
Integrity Impact: None
Availability Impact: None

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat security errata

Platform Errata Release Date
MRG Grid for RHEL 5 Server (kernel-rt) RHSA-2010:0771 October 14, 2010
Red Hat Enterprise Linux version 6 (kernel) RHSA-2010:0842 November 10, 2010

External References

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.