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NVD / CVE Program· CNA mitre

CVE-2009-3228: 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

Noroxi assessment

Priority: Monitor (action score 8/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.39% (FIRST EPSS).
  • No special conditions are required; it is repeatable.
  • Fixed version: linux-2.6 (Debian:4.0) 2.6.18.dfsg.1-26etch1; linux-2.6.24 (Debian:4.0) 2.6.24-6~etchnhalf.9etch1; linux-2.6 (Debian:5.0) 2.6.26-19lenny2.

Low priority for now. Upgrade to linux-2.6 (Debian:4.0) 2.6.18.dfsg.1-26etch1; linux-2.6.24 (Debian:4.0) 2.6.24-6~etchnhalf.9etch1; linux-2.6 (Debian:5.0) 2.6.26-19lenny2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

LowCVSS 2.1 · v2.0—No exploit Fix available
Published
Oct 19, 2009
Updated
Jun 16, 2026
EPSS
0.3% · 33th percentile

Report tools

JSON

Action score

8

Monitor

Low priority for now.

CVSS
8 / 40 · 2.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2009-3228

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel
canonicalubuntu linux
redhatenterprise linux desktop
redhatenterprise linux eus
redhatenterprise linux server
redhatenterprise linux workstation

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • canonical ubuntu linux6.06
  • canonical ubuntu linux8.04
  • canonical ubuntu linux8.10
  • canonical ubuntu linux9.04
  • canonical ubuntu linux9.10
  • linux linux kernel2.4.0 and later · before 2.4.37.6
  • linux linux kernel2.6.0 and later · before 2.6.31
  • linux linux kernel2.6.31
  • redhat enterprise linux desktop5.0
  • redhat enterprise linux eus5.4
  • redhat enterprise linux server5.0
  • redhat enterprise linux workstation5.0

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:4.0linux-2.6before 2.6.18.dfsg.1-26etch12.6.18.dfsg.1-26etch1
Debian:4.0linux-2.6.24before 2.6.24-6~etchnhalf.9etch12.6.24-6~etchnhalf.9etch1
Debian:5.0linux-2.6before 2.6.26-19lenny22.6.26-19lenny2
Red Hat:enterprise_linux:4::askernelbefore 0:2.6.9-89.0.15.EL0:2.6.9-89.0.15.EL
Red Hat:enterprise_linux:4::askernel-debuginfobefore 0:2.6.9-89.0.15.EL0:2.6.9-89.0.15.EL
Red Hat:enterprise_linux:4::askernel-develbefore 0:2.6.9-89.0.15.EL0:2.6.9-89.0.15.EL
Red Hat:enterprise_linux:4::askernel-docbefore 0:2.6.9-89.0.15.EL0:2.6.9-89.0.15.EL
Red Hat:enterprise_linux:4::askernel-hugemembefore 0:2.6.9-89.0.15.EL0:2.6.9-89.0.15.EL
Red Hat:enterprise_linux:4::askernel-hugemem-develbefore 0:2.6.9-89.0.15.EL0:2.6.9-89.0.15.EL
Red Hat:enterprise_linux:4::askernel-largesmpbefore 0:2.6.9-89.0.15.EL0:2.6.9-89.0.15.EL
Red Hat:enterprise_linux:4::askernel-largesmp-develbefore 0:2.6.9-89.0.15.EL0:2.6.9-89.0.15.EL
Red Hat:enterprise_linux:4::askernel-smpbefore 0:2.6.9-89.0.15.EL0:2.6.9-89.0.15.EL
Red Hat:enterprise_linux:4::askernel-smp-develbefore 0:2.6.9-89.0.15.EL0:2.6.9-89.0.15.EL
Red Hat:enterprise_linux:4::askernel-xenUbefore 0:2.6.9-89.0.15.EL0:2.6.9-89.0.15.EL
Red Hat:enterprise_linux:4::askernel-xenU-develbefore 0:2.6.9-89.0.15.EL0:2.6.9-89.0.15.EL
Red Hat:enterprise_linux:5::clientkernelbefore 0:2.6.18-164.6.1.el50:2.6.18-164.6.1.el5
Red Hat:enterprise_linux:5::clientkernel-debugbefore 0:2.6.18-164.6.1.el50:2.6.18-164.6.1.el5
Red Hat:enterprise_linux:5::clientkernel-debug-debuginfobefore 0:2.6.18-164.6.1.el50:2.6.18-164.6.1.el5
Red Hat:enterprise_linux:5::clientkernel-debug-develbefore 0:2.6.18-164.6.1.el50:2.6.18-164.6.1.el5
Red Hat:enterprise_linux:5::clientkernel-debuginfobefore 0:2.6.18-164.6.1.el50:2.6.18-164.6.1.el5
Red Hat:enterprise_linux:5::clientkernel-debuginfo-commonbefore 0:2.6.18-164.6.1.el50:2.6.18-164.6.1.el5
Red Hat:enterprise_linux:5::clientkernel-develbefore 0:2.6.18-164.6.1.el50:2.6.18-164.6.1.el5
Red Hat:enterprise_linux:5::clientkernel-docbefore 0:2.6.18-164.6.1.el50:2.6.18-164.6.1.el5
Red Hat:enterprise_linux:5::clientkernel-headersbefore 0:2.6.18-164.6.1.el50:2.6.18-164.6.1.el5

+23

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
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  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
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  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2009-2908Oct 13, 2009 · The d_delete function in fs/ecryptfs/inode.c in eCryptfs in the Linux kernel 2.6.31 allows local users to cause a denial of service (kernel
    19Monitor
  • ← EarlierCVE-2005-4881Oct 19, 2009 · The netlink subsystem in the Linux kernel 2.4.x before 2.4.37.6 and 2.6.x before 2.6.13-rc1 does not initialize certain padding fields in st
    19Monitor
  • Later →CVE-2009-3612Oct 19, 2009 · The tcf_fill_node function in net/sched/cls_api.c in the netlink subsystem in the Linux kernel 2.6.x before 2.6.32-rc5, and 2.4.37.6 and ear
    8Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:linux-2.62.6.26-19lenny2 · Debian:5.0Package registry (OSV)
debian:linux-2.6.242.6.24-6~etchnhalf.9etch1 · Debian:4.0Package registry (OSV)
red hat:kernel0:2.6.9-89.0.15.EL · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:kernel-debuginfo0:2.6.9-89.0.15.EL · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:kernel-devel0:2.6.9-89.0.15.EL · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:kernel-doc0:2.6.9-89.0.15.EL · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:kernel-hugemem0:2.6.9-89.0.15.EL · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:kernel-hugemem-devel0:2.6.9-89.0.15.EL · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:kernel-largesmp0:2.6.9-89.0.15.EL · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:kernel-largesmp-devel0:2.6.9-89.0.15.EL · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:kernel-smp0:2.6.9-89.0.15.EL · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:kernel-smp-devel0:2.6.9-89.0.15.EL · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:kernel-xenU0:2.6.9-89.0.15.EL · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:kernel-xenU-devel0:2.6.9-89.0.15.EL · Red Hat:enterprise_linux:4::asPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
P · data can be read
Integrity
none
Availability
none
Attack complexity
Low
Confidentiality impact
P
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-909 · Missing Initialization of Resource

CVSS vector

AV:L/AC:L/Au:N/C:P/I:N/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (19 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records