CVE-2010-2955
LOW severity · CVSS 2.1 · CWE-193
2.1CVSS LOW
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges required—
User interaction—
Confidentiality impact—
Integrity impactNone
Availability impactNone
Exploit probability (EPSS)0%
AV:L/AC:L/Au:N/C:P/I:N/A:N
Affected products we track (2)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: http://lkml.org/lkml/2010/8/27/413 ↗
Additional information
- NVD record
- http://lkml.org/lkml/2010/8/27/413Patch
- http://lkml.org/lkml/2010/8/30/127Patch
- http://lkml.org/lkml/2010/8/30/146Patch
- http://forums.grsecurity.net/viewtopic.php?f=3&t=2290Advisory
- http://git.kernel.org/?p=linux/kernel/git/linville/wireless-2.6.git%3Ba=commit%3Bh=42da2f948d949efd0111309f5827bf0298bcc9a4
- http://grsecurity.net/~spender/wireless-infoleak-fix2.patch
- http://lists.opensuse.org/opensuse-security-announce/2010-11/msg00000.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.htmlAdvisory