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.
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disclosed, or updated in CVE.
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