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CVE-2009-2848· NVD / CVE Program· CNA mitre

The execve function in the Linux kernel, possibly 2.6.30-rc6 and earlier, does not properly clear the current->clear_child_tid pointer, whic

Noroxi assessment

Priority: Monitor (action score 23/100)

  • 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: 0.51% (FIRST EPSS).
  • Fixed version: fai-kernels (Debian:4.0) 1.17+etch.24etch4; linux-2.6 (Debian:4.0) 2.6.18.dfsg.1-24etch4; linux-2.6.24 (Debian:4.0) 2.6.24-6~etchnhalf.9etch1.

Low priority for now. Upgrade to fai-kernels (Debian:4.0) 1.17+etch.24etch4; linux-2.6 (Debian:4.0) 2.6.18.dfsg.1-24etch4; linux-2.6.24 (Debian:4.0) 2.6.24-6~etchnhalf.9etch1 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 execve function in the Linux kernel, possibly 2.6.30-rc6 and earlier, does not properly clear the current->clear_child_tid pointer, which allows local users to cause a denial of service (memory corruption) or possibly gain privileges via a clone system call with CLONE_CHILD_SETTID or CLONE_CHILD_CLEARTID enabled, which is not properly handled during thread creation and exit.

MediumCVSS 5.9 · v2.0—No exploit Fix available
Published
Aug 18, 2009
Updated
Jun 16, 2026
EPSS
0.5% · 42th percentile

Report tools

JSON

Action score

23

Monitor

Low priority for now.

CVSS
23 / 40 · 5.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

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

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  • when exploit code appears or is weaponized
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  • 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
novelllinux desktop
opensuseopensuse
suselinux enterprise desktop
suselinux enterprise server
fedoraprojectfedora
canonicalubuntu linux
redhatenterprise linux desktop
redhatenterprise linux server
redhatenterprise linux workstation
vmwareesx
vmwarevma

and 1 more

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
  • fedoraproject fedora11
  • linux linux kernelup to 2.6.29.5 inclusive
  • linux linux kernel2.6.30
  • novell linux desktop9
  • opensuse opensuse11.0
  • redhat enterprise linux desktop3.0
  • redhat enterprise linux desktop5.0
  • redhat enterprise linux server3.0
  • redhat enterprise linux server5.0
  • redhat enterprise linux workstation3.0
  • redhat enterprise linux workstation5.0
  • suse linux enterprise desktop10
  • suse linux enterprise server10
  • suse linux enterprise server9
  • vmware esx4.0
  • vmware vma4.0

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:4.0fai-kernelsbefore 1.17+etch.24etch41.17+etch.24etch4
Debian:4.0linux-2.6before 2.6.18.dfsg.1-24etch42.6.18.dfsg.1-24etch4
Debian:4.0linux-2.6.24before 2.6.24-6~etchnhalf.9etch12.6.24-6~etchnhalf.9etch1
Debian:4.0user-mode-linuxbefore 2.6.18-1um-2etch.24etch42.6.18-1um-2etch.24etch4
Red Hat:enterprise_linux:3::askernelbefore 0:2.4.21-63.EL0:2.4.21-63.EL
Red Hat:enterprise_linux:3::askernel-BOOTbefore 0:2.4.21-63.EL0:2.4.21-63.EL
Red Hat:enterprise_linux:3::askernel-debuginfobefore 0:2.4.21-63.EL0:2.4.21-63.EL
Red Hat:enterprise_linux:3::askernel-docbefore 0:2.4.21-63.EL0:2.4.21-63.EL
Red Hat:enterprise_linux:3::askernel-hugemembefore 0:2.4.21-63.EL0:2.4.21-63.EL
Red Hat:enterprise_linux:3::askernel-hugemem-unsupportedbefore 0:2.4.21-63.EL0:2.4.21-63.EL
Red Hat:enterprise_linux:3::askernel-smpbefore 0:2.4.21-63.EL0:2.4.21-63.EL
Red Hat:enterprise_linux:3::askernel-smp-unsupportedbefore 0:2.4.21-63.EL0:2.4.21-63.EL
Red Hat:enterprise_linux:3::askernel-sourcebefore 0:2.4.21-63.EL0:2.4.21-63.EL
Red Hat:enterprise_linux:3::askernel-unsupportedbefore 0:2.4.21-63.EL0:2.4.21-63.EL
Red Hat:enterprise_linux:4::askernelbefore 0:2.6.9-89.0.11.EL0:2.6.9-89.0.11.EL
Red Hat:enterprise_linux:4::askernel-debuginfobefore 0:2.6.9-89.0.11.EL0:2.6.9-89.0.11.EL
Red Hat:enterprise_linux:4::askernel-develbefore 0:2.6.9-89.0.11.EL0:2.6.9-89.0.11.EL
Red Hat:enterprise_linux:4::askernel-docbefore 0:2.6.9-89.0.11.EL0:2.6.9-89.0.11.EL
Red Hat:enterprise_linux:4::askernel-hugemembefore 0:2.6.9-89.0.11.EL0:2.6.9-89.0.11.EL
Red Hat:enterprise_linux:4::askernel-hugemem-develbefore 0:2.6.9-89.0.11.EL0:2.6.9-89.0.11.EL
Red Hat:enterprise_linux:4::askernel-largesmpbefore 0:2.6.9-89.0.11.EL0:2.6.9-89.0.11.EL
Red Hat:enterprise_linux:4::askernel-largesmp-develbefore 0:2.6.9-89.0.11.EL0:2.6.9-89.0.11.EL
Red Hat:enterprise_linux:4::askernel-smpbefore 0:2.6.9-89.0.11.EL0:2.6.9-89.0.11.EL
Red Hat:enterprise_linux:4::askernel-smp-develbefore 0:2.6.9-89.0.11.EL0:2.6.9-89.0.11.EL

+52

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • 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
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now
  • CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
    83Now

Published before and after this one in the same product

  • ← EarlierCVE-2009-2768Aug 14, 2009 · The load_flat_shared_library function in fs/binfmt_flat.c in the flat subsystem in the Linux kernel before 2.6.31-rc6 allows local users to
    31Monitor
  • ← EarlierCVE-2009-2846Aug 18, 2009 · The eisa_eeprom_read function in the parisc isa-eeprom component (drivers/parisc/eisa_eeprom.c) in the Linux kernel before 2.6.31-rc6 allows
    33Monitor
  • Later →CVE-2009-2849Aug 18, 2009 · The md driver (drivers/md/md.c) in the Linux kernel before 2.6.30.2 might allow local users to cause a denial of service (NULL pointer deref
    18Monitor

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:fai-kernels1.17+etch.24etch4 · Debian:4.0Package registry (OSV)
debian:linux-2.62.6.18.dfsg.1-24etch4 · Debian:4.0Package registry (OSV)
debian:linux-2.6.242.6.24-6~etchnhalf.9etch1 · Debian:4.0Package registry (OSV)
debian:user-mode-linux2.6.18-1um-2etch.24etch4 · Debian:4.0Package registry (OSV)
red hat:kernel-rt0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5Package registry (OSV)
red hat:kernel-rt-debug0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5Package registry (OSV)
red hat:kernel-rt-debug-debuginfo0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5Package registry (OSV)
red hat:kernel-rt-debug-devel0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5Package registry (OSV)
red hat:kernel-rt-debuginfo0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5Package registry (OSV)
red hat:kernel-rt-debuginfo-common0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5Package registry (OSV)
red hat:kernel-rt-devel0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5Package registry (OSV)
red hat:kernel-rt-doc0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5Package registry (OSV)
red hat:kernel-rt-trace0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5Package registry (OSV)
red hat:kernel-rt-trace-debuginfo0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5Package registry (OSV)
red hat:kernel-rt-trace-devel0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5Package registry (OSV)
red hat:kernel-rt-vanilla0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5Package 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

    If successful

    Confidentiality
    P · data can be read
    Integrity
    P · data or configuration can be modified
    Availability
    C · the service can be disrupted
    Attack complexity
    M
    Confidentiality impact
    P
    Integrity impact
    P
    Availability impact
    C

    Weakness class (CWE)

    CWE-269 · Improper Privilege Management

    CVSS vector

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

    nvd-primary

    Root cause

    To simplify setup, a service account is granted broad, cluster-wide permissions. The principle of least privilege is skipped during installation.

    The bug in code

    The whole CWE-269 class

    A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

    Vulnerable

    yaml
    kind: ClusterRolerules:  - apiGroups: ["*"]    resources: ["*"]    verbs: ["*"]

    Fixed

    yaml
    kind: Rolemetadata:  namespace: lodos-systemrules:  - apiGroups: ["apps"]    resources: ["deployments"]    verbs: ["get", "list", "update"]

    Attack context

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

    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