CVE-2010-2955

Name: CVE-2010-2955
Creator: NVD / NIST
Published: 2010-09-08T20:00:03.417+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.41%

Last modified Jun 16, 2026

CVE-2010-2955 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.41% chance of exploitation in the next 30 days.

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

EPSS Probability

0.41%

33.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-193

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	< 2.6.36	—
Linux	Linux Kernel	2.6.36	—
Opensuse	Opensuse	11.1	—
Suse	Linux Enterprise Desktop	11	—
Suse	Linux Enterprise Real Time Extension	11	Sp1
Suse	Linux Enterprise Server	11	—
Canonical	Ubuntu Linux	6.06	—
Canonical	Ubuntu Linux	8.04	—
Canonical	Ubuntu Linux	9.04	—
Canonical	Ubuntu Linux	9.10	—
Canonical	Ubuntu Linux	10.04	—
Canonical	Ubuntu Linux	10.10	—

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
Status: Modified

Frequently Asked Questions

What is CVE-2010-2955?

How severe is CVE-2010-2955?

Severity scoring for CVE-2010-2955 is pending analysis. The EPSS model estimates a 0.41% probability of exploitation in the next 30 days.

How do I fix CVE-2010-2955?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2010-2955?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST