CVE-2009-2848

Exp

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.

Published: 2009-08-18 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-2848 is rated Exploit Available (50/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.06%). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2009-2848

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2009-2848

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 0.04% 0.06% +0.02%
2 2025-03-29 0.05% 0.04% -0.01%
3 2023-03-07 — 0.05% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-2848

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.9 2.0 MEDIUM
AV:L/AC:M/Au:N/C:P/I:P/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.4 8.5 [email protected]

Weakness enumeration for CVE-2009-2848

OS Trackers for CVE-2009-2848

vendor priority summary link
redhat high — https://access.redhat.com/security/cve/CVE-2009-2848
ubuntu medium CVE-2009-2848 medium priority: Ubuntu including 2 source packages (linux, linux-source-2.6.15), 10 status rows across 5 suites (dapper, hardy, intrepid, jaunty, upstream): DNE 4, released 4, needs-triage 2. https://ubuntu.com/security/CVE-2009-2848

Affected software / configurations for CVE-2009-2848

Vendor Product Version Raw CPE
linux linux_kernel <= 2.6.29.5 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel 2.6.30 cpe:2.3:o:linux:linux_kernel:2.6.30:-:*:*:*:*:*:*
linux linux_kernel 2.6.30 cpe:2.3:o:linux:linux_kernel:2.6.30:rc1:*:*:*:*:*:*
linux linux_kernel 2.6.30 cpe:2.3:o:linux:linux_kernel:2.6.30:rc2:*:*:*:*:*:*
linux linux_kernel 2.6.30 cpe:2.3:o:linux:linux_kernel:2.6.30:rc3:*:*:*:*:*:*
linux linux_kernel 2.6.30 cpe:2.3:o:linux:linux_kernel:2.6.30:rc4:*:*:*:*:*:*
linux linux_kernel 2.6.30 cpe:2.3:o:linux:linux_kernel:2.6.30:rc5:*:*:*:*:*:*
linux linux_kernel 2.6.30 cpe:2.3:o:linux:linux_kernel:2.6.30:rc6:*:*:*:*:*:*
novell linux_desktop 9 cpe:2.3:o:novell:linux_desktop:9:*:*:*:*:*:*:*
opensuse opensuse 11.0 cpe:2.3:o:opensuse:opensuse:11.0:*:*:*:*:*:*:*
suse linux_enterprise_desktop 10 cpe:2.3:o:suse:linux_enterprise_desktop:10:sp2:*:*:*:*:*:*
suse linux_enterprise_server 9 cpe:2.3:o:suse:linux_enterprise_server:9:*:*:*:*:*:*:*
suse linux_enterprise_server 10 cpe:2.3:o:suse:linux_enterprise_server:10:sp2:*:*:*:*:*:*
fedoraproject fedora 11 cpe:2.3:o:fedoraproject:fedora:11:*:*:*:*:*:*:*
canonical ubuntu_linux 6.06 cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*
canonical ubuntu_linux 8.04 cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:*:*:*:*
canonical ubuntu_linux 8.10 cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:*
canonical ubuntu_linux 9.04 cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 3.0 cpe:2.3:o:redhat:enterprise_linux_desktop:3.0:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 5.0 cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 3.0 cpe:2.3:o:redhat:enterprise_linux_server:3.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 5.0 cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 3.0 cpe:2.3:o:redhat:enterprise_linux_workstation:3.0:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 5.0 cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:*
vmware esx 4.0 cpe:2.3:o:vmware:esx:4.0:*:*:*:*:*:*:*
vmware vma 4.0 cpe:2.3:a:vmware:vma:4.0:*:*:*:*:*:*:*

References for CVE-2009-2848

URL Tags
http://article.gmane.org/gmane.linux.kernel/871942 Broken Link
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00005.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00007.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html Mailing List Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2009-1243.html Third Party Advisory
http://secunia.com/advisories/35983 Broken Link
http://secunia.com/advisories/36501 Broken Link
http://secunia.com/advisories/36562 Broken Link
http://secunia.com/advisories/36759 Broken Link
http://secunia.com/advisories/37105 Broken Link
http://secunia.com/advisories/37351 Broken Link
http://secunia.com/advisories/37471 Broken Link
http://www.openwall.com/lists/oss-security/2009/08/04/2 Exploit Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2009/08/05/10 Exploit Mailing List Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2009-1438.html Broken Link
http://www.securityfocus.com/archive/1/507985/100/0/threaded Third Party Advisory VDB Entry
http://www.securityfocus.com/archive/1/512019/100/0/threaded Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/USN-852-1 Third Party Advisory
http://www.vmware.com/security/advisories/VMSA-2009-0016.html Third Party Advisory
http://www.vupen.com/english/advisories/2009/3316 Broken Link
https://exchange.xforce.ibmcloud.com/vulnerabilities/52899 Third Party Advisory VDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11412 Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8598 Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9766 Third Party Advisory
https://rhn.redhat.com/errata/RHSA-2009-1550.html Third Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01256.html Mailing List Third Party Advisory
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