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low 2.1

CVE-2010-2955 json

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 ini…

published 16y ago modified 4mo ago also EUVD-2010-2959

cvss
2.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 36%
public exploits
0
none known

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.

Patch / fix

  • linux linux_kernel 2.6.36
  • kernel RHEL 6 2.6.32-71.7.1.el6
  • perf RHEL 6 2.6.32-71.7.1.el6
  • kernel-kdump RHEL 6 2.6.32-71.7.1.el6
  • kernel-firmware RHEL 6 2.6.32-71.7.1.el6
  • kernel-bootwrapper RHEL 6 2.6.32-71.7.1.el6
  • kernel-debuginfo-common-i686 RHEL 6 2.6.32-71.7.1.el6
  • kernel-debuginfo-common-ppc64 RHEL 6 2.6.32-71.7.1.el6
  • kernel-debuginfo-common-s390x RHEL 6 2.6.32-71.7.1.el6

red hat advisories RHSA-2010:0842RHSA-2010:0771

  • kernel-source openSUSE Tumbleweed 4.8.13-1.1

opensuse advisories openSUSE-SU-2024:10128-1

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2010-2955 updated cvss 2.1

kernel: wireless: fix 64K kernel heap content leak via ioctl

  • Red Hat MRG Realtime for RHEL 5 Server perf 2.6.33.7-rt29.45.el5rt, kernel-rt 2.6.33.7-rt29.45.el5rt, kernel-rt-trace 2.6.33.7-rt29.45.el5rt, kernel-rt-vanilla 2.6.33.7-rt29.45.el5rt, kernel-rt-debuginfo-common 2.6.33.7-rt29.45.el5rt
    fixed: vendor fix RHSA-2010:0771
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-71.7.1.el6, kernel 2.6.32-71.7.1.el6, kernel-kdump 2.6.32-71.7.1.el6, kernel-firmware 2.6.32-71.7.1.el6, kernel-bootwrapper 2.6.32-71.7.1.el6, kernel-debuginfo-common-i686 2.6.32-71.7.1.el6, +3 more Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-71.7.1.el6, kernel 2.6.32-71.7.1.el6, kernel-kdump 2.6.32-71.7.1.el6, kernel-firmware 2.6.32-71.7.1.el6, kernel-bootwrapper 2.6.32-71.7.1.el6, kernel-debuginfo-common-i686 2.6.32-71.7.1.el6, +3 more Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-71.7.1.el6, kernel 2.6.32-71.7.1.el6, kernel-kdump 2.6.32-71.7.1.el6, kernel-firmware 2.6.32-71.7.1.el6, kernel-bootwrapper 2.6.32-71.7.1.el6, kernel-debuginfo-common-i686 2.6.32-71.7.1.el6, +3 more Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-71.7.1.el6, kernel 2.6.32-71.7.1.el6, kernel-kdump 2.6.32-71.7.1.el6, kernel-firmware 2.6.32-71.7.1.el6, kernel-bootwrapper 2.6.32-71.7.1.el6, kernel-debuginfo-common-i686 2.6.32-71.7.1.el6, +3 more
    fixed: vendor fix RHSA-2010:0842

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.