Description
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.
Metrics
CVSS 2.0 2.1/10
AV:L/AC:L/Au:N/C:P/I:N/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://forums.grsecurity.net/viewtopic.php?f=3&t=2290Third Party Advisory
- http://git.kernel.org/?p=linux/kernel/git/linville/wireless-2.6.git%3Ba=commit%3Bh=42da2f948d949efd0111309f5827bf0298bcc9a4
- http://grsecurity.net/~spender/wireless-infoleak-fix2.patchBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2010-11/msg00000.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.htmlMailing List, Third Party Advisory
- http://lkml.org/lkml/2010/8/27/413Mailing List, Patch, Third Party Advisory
- http://lkml.org/lkml/2010/8/30/127Mailing List, Patch, Third Party Advisory
- http://lkml.org/lkml/2010/8/30/146Mailing List, Patch, Third Party Advisory
- http://lkml.org/lkml/2010/8/30/351Mailing List, Patch, Third Party Advisory
- http://secunia.com/advisories/41245Third Party Advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.36-rc3-next-20100831.bz2Broken Link
- http://www.openwall.com/lists/oss-security/2010/08/31/1Mailing List, Patch, Third Party Advisory
- http://www.redhat.com/support/errata/RHSA-2010-0771.htmlThird Party Advisory
- http://www.redhat.com/support/errata/RHSA-2010-0842.htmlThird Party Advisory
- http://www.securityfocus.com/bid/42885Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-1000-1Third Party Advisory
- http://www.vupen.com/english/advisories/2011/0298Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=628434Issue Tracking, Third Party Advisory
- http://forums.grsecurity.net/viewtopic.php?f=3&t=2290Third Party Advisory
- http://git.kernel.org/?p=linux/kernel/git/linville/wireless-2.6.git%3Ba=commit%3Bh=42da2f948d949efd0111309f5827bf0298bcc9a4
- http://grsecurity.net/~spender/wireless-infoleak-fix2.patchBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2010-11/msg00000.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.htmlMailing List, Third Party Advisory
- http://lkml.org/lkml/2010/8/27/413Mailing List, Patch, Third Party Advisory
- http://lkml.org/lkml/2010/8/30/127Mailing List, Patch, Third Party Advisory
- http://lkml.org/lkml/2010/8/30/146Mailing List, Patch, Third Party Advisory
- http://lkml.org/lkml/2010/8/30/351Mailing List, Patch, Third Party Advisory
- http://secunia.com/advisories/41245Third Party Advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.36-rc3-next-20100831.bz2Broken Link
- http://www.openwall.com/lists/oss-security/2010/08/31/1Mailing List, Patch, Third Party Advisory
- http://www.redhat.com/support/errata/RHSA-2010-0771.htmlThird Party Advisory
- http://www.redhat.com/support/errata/RHSA-2010-0842.htmlThird Party Advisory
- http://www.securityfocus.com/bid/42885Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-1000-1Third Party Advisory
- http://www.vupen.com/english/advisories/2011/0298Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=628434Issue Tracking, Third Party Advisory
Timeline
- Published
- Sep 8, 2010
- Last modified
- Jun 16, 2026
- NVD status
- Modified