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    CVE-2010-2955

    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.

    Published:Aug 27, 2010
    Last Modified:Apr 11, 2025
    EPS:Sep 8, 2010
    EPSS Score:0.00093
    CVSS Score:2.1

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Opensuse
    Product
    Opensuse
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Mrg
    Vendor
    Suse
    Product
    Linux Enterprise Desktop
    Vendor
    Suse
    Product
    Linux Enterprise Real Time Extension
    Vendor
    Suse
    Product
    Linux Enterprise Server

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-193 Off-by-one Error

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
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    References

    http://forums.grsecurity.net/viewtopic.php?f=3&t=2290
    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.html
    http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
    http://lkml.org/lkml/2010/8/27/413
    http://lkml.org/lkml/2010/8/30/127
    http://lkml.org/lkml/2010/8/30/146
    http://lkml.org/lkml/2010/8/30/351
    http://secunia.com/advisories/41245
    http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.36-rc3-next-20100831.bz2
    http://www.openwall.com/lists/oss-security/2010/08/31/1
    http://www.redhat.com/support/errata/RHSA-2010-0771.html
    http://www.redhat.com/support/errata/RHSA-2010-0842.html
    http://www.securityfocus.com/bid/42885
    http://www.ubuntu.com/usn/USN-1000-1
    http://www.vupen.com/english/advisories/2011/0298
    https://bugzilla.redhat.com/show_bug.cgi?id=628434
    http://forums.grsecurity.net/viewtopic.php?f=3&t=2290
    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.html
    http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
    http://lkml.org/lkml/2010/8/27/413
    http://lkml.org/lkml/2010/8/30/127
    http://lkml.org/lkml/2010/8/30/146
    http://lkml.org/lkml/2010/8/30/351
    http://secunia.com/advisories/41245
    http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.36-rc3-next-20100831.bz2
    http://www.openwall.com/lists/oss-security/2010/08/31/1
    http://www.redhat.com/support/errata/RHSA-2010-0771.html
    http://www.redhat.com/support/errata/RHSA-2010-0842.html
    http://www.securityfocus.com/bid/42885
    http://www.ubuntu.com/usn/USN-1000-1
    http://www.vupen.com/english/advisories/2011/0298
    https://bugzilla.redhat.com/show_bug.cgi?id=628434

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High