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Fencer Vulns
low 2.1

CVE-2009-3228 json

The tc_fill_tclass function in net/sched/sch_api.c in the tc subsystem in the Linux kernel 2.4.x before 2.4.37.6 and 2.6.x before 2.6.31-rc…

published 2009-10-19 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-3211

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 34%
public exploits
0
none known

Summary

The tc_fill_tclass function in net/sched/sch_api.c in the tc subsystem in the Linux kernel 2.4.x before 2.4.37.6 and 2.6.x before 2.6.31-rc9 does not initialize certain (1) tcm__pad1 and (2) tcm__pad2 structure members, which might allow local users to obtain sensitive information from kernel memory via unspecified vectors.

Patch / fix

  • linux linux_kernel 2.4.37.6, 2.6.31
  • kernel RHEL 5 2.6.18-164.6.1.el5
  • kernel-PAE RHEL 5 2.6.18-164.6.1.el5
  • kernel-xen RHEL 5 2.6.18-164.6.1.el5
  • kernel-kdump RHEL 5 2.6.18-164.6.1.el5
  • kernel-debuginfo-common RHEL 5 2.6.18-164.6.1.el5
  • kernel RHEL 4 2.6.9-89.0.15.EL
  • kernel-smp RHEL 4 2.6.9-89.0.15.EL
  • kernel-xenU RHEL 4 2.6.9-89.0.15.EL

red hat advisories RHSA-2009:1548RHSA-2009:1522RHSA-2009:1540

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-2009-3228 updated cvss 2.1

kernel: tc: uninitialised kernel memory leak

  • Red Hat MRG Realtime for RHEL 5 Server kernel-rt 2.6.24.7-137.el5rt, kernel-rt-trace 2.6.24.7-137.el5rt, kernel-rt-vanilla 2.6.24.7-137.el5rt, kernel-rt-debuginfo-common 2.6.24.7-137.el5rt
    fixed: vendor fix RHSA-2009:1540
  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-164.6.1.el5, kernel-PAE 2.6.18-164.6.1.el5, kernel-xen 2.6.18-164.6.1.el5, kernel-kdump 2.6.18-164.6.1.el5, kernel-debuginfo-common 2.6.18-164.6.1.el5
    fixed: vendor fix RHSA-2009:1548
  • Red Hat Enterprise Linux AS version 4 kernel 2.6.9-89.0.15.EL, kernel-smp 2.6.9-89.0.15.EL, kernel-xenU 2.6.9-89.0.15.EL, kernel-hugemem 2.6.9-89.0.15.EL, kernel-largesmp 2.6.9-89.0.15.EL
    fixed: vendor fix RHSA-2009:1522
  • Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-164.6.1.el5, kernel-PAE 2.6.18-164.6.1.el5, kernel-xen 2.6.18-164.6.1.el5, kernel-kdump 2.6.18-164.6.1.el5, kernel-debuginfo-common 2.6.18-164.6.1.el5
    fixed: vendor fix RHSA-2009:1548
  • Red Hat Enterprise Linux Desktop version 4 kernel 2.6.9-89.0.15.EL, kernel-smp 2.6.9-89.0.15.EL, kernel-xenU 2.6.9-89.0.15.EL, kernel-hugemem 2.6.9-89.0.15.EL, kernel-largesmp 2.6.9-89.0.15.EL Red Hat Enterprise Linux ES version 4 kernel 2.6.9-89.0.15.EL, kernel-smp 2.6.9-89.0.15.EL, kernel-xenU 2.6.9-89.0.15.EL, kernel-hugemem 2.6.9-89.0.15.EL, kernel-largesmp 2.6.9-89.0.15.EL Red Hat Enterprise Linux WS version 4 kernel 2.6.9-89.0.15.EL, kernel-smp 2.6.9-89.0.15.EL, kernel-xenU 2.6.9-89.0.15.EL, kernel-hugemem 2.6.9-89.0.15.EL, kernel-largesmp 2.6.9-89.0.15.EL
    fixed: vendor fix RHSA-2009:1522

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

0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-08).

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-909 Missing Initialization of Resource
Technology feeds

References

Sources

Fencer Vulns 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.