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Fencer Intel
low 2.1

CVE-2010-3861 json

The ethtool_get_rxnfc function in net/core/ethtool.c in the Linux kernel before 2.6.36 does not initialize a certain block of heap memory,…

published 15y ago modified 4mo ago also EUVD-2010-3840

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 35%
public exploits
0
none known

Summary

The ethtool_get_rxnfc function in net/core/ethtool.c in the Linux kernel before 2.6.36 does not initialize a certain block of heap memory, which allows local users to obtain potentially sensitive information via an ETHTOOL_GRXCLSRLALL ethtool command with a large info.rule_cnt value, a different vulnerability than CVE-2010-2478.

Patch / fix

  • linux linux_kernel 2.6.36
  • kernel RHEL 6 2.6.32-71.14.1.el6
  • perf RHEL 6 2.6.32-71.14.1.el6
  • kernel-kdump RHEL 6 2.6.32-71.14.1.el6
  • kernel-firmware RHEL 6 2.6.32-71.14.1.el6
  • kernel-bootwrapper RHEL 6 2.6.32-71.14.1.el6
  • kernel-debuginfo-common-i686 RHEL 6 2.6.32-71.14.1.el6
  • kernel-debuginfo-common-ppc64 RHEL 6 2.6.32-71.14.1.el6
  • kernel-debuginfo-common-s390x RHEL 6 2.6.32-71.14.1.el6

red hat advisories RHSA-2011:0007RHSA-2010:0958

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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-2010-3861 updated cvss 2.1

kernel: heap contents leak from ETHTOOL_GRXCLSRLALL

  • Red Hat MRG Realtime for RHEL 5 Server perf 2.6.33.7-rt29.47.el5rt, kernel-rt 2.6.33.7-rt29.47.el5rt, kernel-rt-trace 2.6.33.7-rt29.47.el5rt, kernel-rt-vanilla 2.6.33.7-rt29.47.el5rt, kernel-rt-debuginfo-common 2.6.33.7-rt29.47.el5rt
    fixed: vendor fix RHSA-2010:0958
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-71.14.1.el6, kernel 2.6.32-71.14.1.el6, kernel-kdump 2.6.32-71.14.1.el6, kernel-firmware 2.6.32-71.14.1.el6, kernel-bootwrapper 2.6.32-71.14.1.el6, kernel-debuginfo-common-i686 2.6.32-71.14.1.el6, +3 more Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-71.14.1.el6, kernel 2.6.32-71.14.1.el6, kernel-kdump 2.6.32-71.14.1.el6, kernel-firmware 2.6.32-71.14.1.el6, kernel-bootwrapper 2.6.32-71.14.1.el6, kernel-debuginfo-common-i686 2.6.32-71.14.1.el6, +3 more Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-71.14.1.el6, kernel 2.6.32-71.14.1.el6, kernel-kdump 2.6.32-71.14.1.el6, kernel-firmware 2.6.32-71.14.1.el6, kernel-bootwrapper 2.6.32-71.14.1.el6, kernel-debuginfo-common-i686 2.6.32-71.14.1.el6, +3 more Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-71.14.1.el6, kernel 2.6.32-71.14.1.el6, kernel-kdump 2.6.32-71.14.1.el6, kernel-firmware 2.6.32-71.14.1.el6, kernel-bootwrapper 2.6.32-71.14.1.el6, kernel-debuginfo-common-i686 2.6.32-71.14.1.el6, +3 more
    fixed: vendor fix RHSA-2011:0007

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

0.41% chance of exploitation in the next 30 days, higher than 35% 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
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
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.