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…

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.

Scores

EPSS (exploitation in 30 days)

0.41% · top 64% of all CVEs (4 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.1.

Weakness

• n/a
• CWE-193 (opens in a new tab)All about CWE-193 and its CVEs

Affected products

• n/a

  • affected n/a

References (18)

• USN-1000-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• RHSA-2010:0771 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• 42885 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• http://git.kernel.org/?p=linux/kernel/git/linville/wireless-2.6.git%3Ba=commit%3Bh=42da2f948d949efd0111309f5827bf0298bcc9a4 (opens in a new tab)x_refsource_CONFIRMx_transferred
• [linux-kernel] 20100830 Re: [PATCH] wireless: fix 64K kernel heap content leak via ioctl (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• http://grsecurity.net/~spender/wireless-infoleak-fix2.patch (opens in a new tab)x_refsource_MISCx_transferred
• SUSE-SA:2011:007 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• [linux-kernel] 20100830 Re: [PATCH] wireless extensions: fix kernel heap content leak (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• RHSA-2010:0842 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• [oss-security] 20100831 CVE-2010-2955 kernel: wireless: fix 64K kernel heap content leak via ioctl (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• ADV-2011-0298 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• [linux-kernel] 20100827 [PATCH] wireless: fix 64K kernel heap content leak via ioctl (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• http://forums.grsecurity.net/viewtopic.php?f=3&t=2290 (opens in a new tab)x_refsource_MISCx_transferred
• https://bugzilla.redhat.com/show_bug.cgi?id=628434 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 41245 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.36-rc3-next-20100831.bz2 (opens in a new tab)x_refsource_CONFIRMx_transferred
• [linux-kernel] 20100830 [PATCH] wireless extensions: fix kernel heap content leak (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• SUSE-SA:2010:054 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2010-2955](https://trackcve.app/badge/CVE-2010-2955.svg)](https://trackcve.app/cve/CVE-2010-2955)

Record last updated 7 Aug 2024, 02:55 UTC.