|Bugzilla:||628434: CVE-2010-2955 kernel: wireless: fix 64K kernel heap content leak via ioctl|
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.
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.
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Red Hat security errata
|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|
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