LOW
Linux kernel minor signal handling vulnerability
Published Feb 27, 2009
2.1
LOWCVSS 2.0
EPSS 0.70%
Description
The clone system call in the Linux kernel 2.6.28 and earlier allows local users to send arbitrary signals to a parent process from an unprivileged child process by launching an additional child process with the CLONE_PARENT flag, and then letting this new process exit.
Affected products
No data.
OR
- ≤ 2.6.28
- 2.2.27
- 2.4.36
- 2.4.36.1
- 2.4.36.2
- 2.4.36.3
- 2.4.36.4
- 2.4.36.5
- 2.4.36.6
- 2.6
- 2.6.0
- 2.6.1
- 2.6.2
- 2.6.10
- 2.6.11
- 2.6.11.1
- 2.6.11.2
- 2.6.11.3
- 2.6.11.4
- 2.6.11.5
- 2.6.11.6
- 2.6.11.7
- 2.6.11.8
- 2.6.11.9
- 2.6.11.10
- 2.6.11.11
- 2.6.11.12
- 2.6.12
- 2.6.12.1
- 2.6.12.2
- 2.6.12.3
- 2.6.12.4
- 2.6.12.5
- 2.6.12.6
- 2.6.13
- 2.6.13.1
- 2.6.13.2
- 2.6.13.3
- 2.6.13.4
- 2.6.13.5
- 2.6.14
- 2.6.14.1
- 2.6.14.2
- 2.6.14.3
- 2.6.14.4
- 2.6.14.5
- 2.6.14.6
- 2.6.14.7
- 2.6.15
- 2.6.15.1
- 2.6.15.2
- 2.6.15.3
- 2.6.15.4
- 2.6.15.5
- 2.6.15.6
- 2.6.15.7
- 2.6.16
- 2.6.16.1
- 2.6.16.2
- 2.6.16.3
- 2.6.16.4
- 2.6.16.5
- 2.6.16.6
- 2.6.16.7
- 2.6.16.8
- 2.6.16.9
- 2.6.16.10
- 2.6.16.11
- 2.6.16.12
- 2.6.16.13
- 2.6.16.14
- 2.6.16.15
- 2.6.16.16
- 2.6.16.17
- 2.6.16.18
- 2.6.16.19
- 2.6.16.20
- 2.6.16.21
- 2.6.16.22
- 2.6.16.23
- 2.6.16.24
- 2.6.16.25
- 2.6.16.26
- 2.6.16.27
- 2.6.16.28
- 2.6.16.29
- 2.6.16.30
- 2.6.16.31
- 2.6.16.32
- 2.6.16.33
- 2.6.16.34
- 2.6.16.35
- 2.6.16.36
- 2.6.16.37
- 2.6.16.38
- 2.6.16.39
- 2.6.16.40
- 2.6.16.41
- 2.6.16.42
- 2.6.16.43
- 2.6.16.44
- 2.6.16.45
- 2.6.16.46
- 2.6.16.47
- 2.6.16.48
- 2.6.16.49
- 2.6.16.50
- 2.6.16.51
- 2.6.16.52
- 2.6.16.53
- 2.6.16.54
- 2.6.16.55
- 2.6.16.56
- 2.6.16.57
- 2.6.16.58
- 2.6.16.59
- 2.6.16.60
- 2.6.16.61
- 2.6.16.62
- 2.6.17
- 2.6.17.1
- 2.6.17.2
- 2.6.17.3
- 2.6.17.4
- 2.6.17.5
- 2.6.17.6
- 2.6.17.7
- 2.6.17.8
- 2.6.17.9
- 2.6.17.10
- 2.6.17.11
- 2.6.17.12
- 2.6.17.13
- 2.6.17.14
- 2.6.18
- 2.6.18
- 2.6.18
- 2.6.18
- 2.6.18
- 2.6.18
- 2.6.18
- 2.6.18
- 2.6.18.1
- 2.6.18.2
- 2.6.18.3
- 2.6.18.4
- 2.6.18.5
- 2.6.18.6
- 2.6.18.7
- 2.6.18.8
- 2.6.19
- 2.6.19.1
- 2.6.19.2
- 2.6.19.3
- 2.6.19.4
- 2.6.19.5
- 2.6.19.6
- 2.6.19.7
- 2.6.20
- 2.6.20.1
- 2.6.20.2
- 2.6.20.3
- 2.6.20.4
- 2.6.20.5
- 2.6.20.6
- 2.6.20.7
- 2.6.20.8
- 2.6.20.9
- 2.6.20.10
- 2.6.20.11
- 2.6.20.12
- 2.6.20.13
- 2.6.20.14
- 2.6.20.15
- 2.6.20.16
- 2.6.20.17
- 2.6.20.18
- 2.6.20.19
- 2.6.20.20
- 2.6.20.21
- 2.6.21
- 2.6.21.1
- 2.6.21.2
- 2.6.21.3
- 2.6.21.4
- 2.6.21.5
- 2.6.21.6
- 2.6.21.7
- 2.6.22
- 2.6.22.1
- 2.6.22.2
- 2.6.22.3
- 2.6.22.4
- 2.6.22.5
- 2.6.22.6
- 2.6.22.7
- 2.6.22.8
- 2.6.22.9
- 2.6.22.10
- 2.6.22.11
- 2.6.22.12
- 2.6.22.13
- 2.6.22.14
- 2.6.22.15
- 2.6.22.16
- 2.6.22.17
- 2.6.22.18
- 2.6.22.19
- 2.6.22.20
- 2.6.22.21
- 2.6.22.22
- 2.6.22_rc1
- 2.6.22_rc7
- 2.6.23
- 2.6.23
- 2.6.23
- 2.6.23.1
- 2.6.23.2
- 2.6.23.3
- 2.6.23.4
- 2.6.23.5
- 2.6.23.6
- 2.6.23.7
- 2.6.23.8
- 2.6.23.9
- 2.6.23.10
- 2.6.23.11
- 2.6.23.12
- 2.6.23.13
- 2.6.23.14
- 2.6.23.15
- 2.6.23.16
- 2.6.23.17
- 2.6.23_rc1
- 2.6.24
- 2.6.24
- 2.6.24
- 2.6.24
- 2.6.24
- 2.6.24
- 2.6.24.1
- 2.6.24.2
- 2.6.24.3
- 2.6.24.4
- 2.6.24.5
- 2.6.24.6
- 2.6.24.7
- 2.6.24_rc1
- 2.6.24_rc4
- 2.6.24_rc5
- 2.6.25
- 2.6.25
- 2.6.25.1
- 2.6.25.1
- 2.6.25.2
- 2.6.25.2
- 2.6.25.3
- 2.6.25.3
- 2.6.25.4
- 2.6.25.4
- 2.6.25.5
- 2.6.25.5
- 2.6.25.6
- 2.6.25.6
- 2.6.25.7
- 2.6.25.7
- 2.6.25.8
- 2.6.25.8
- 2.6.25.9
- 2.6.25.9
- 2.6.25.10
- 2.6.25.10
- 2.6.25.11
- 2.6.25.11
- 2.6.25.12
- 2.6.25.12
- 2.6.25.13
- 2.6.25.14
- 2.6.25.15
- 2.6.25.16
- 2.6.25.17
- 2.6.25.18
- 2.6.25.19
- 2.6.25.20
- 2.6.26
- 2.6.26
- 2.6.26.1
- 2.6.26.2
- 2.6.26.3
- 2.6.26.4
- 2.6.26.5
- 2.6.26.6
- 2.6.26.7
- 2.6.26.8
- 2.6.27
- 2.6.27
- 2.6.27
- 2.6.27
- 2.6.27
- 2.6.27
- 2.6.27
- 2.6.27
- 2.6.27
- 2.6.27
- 2.6.27.1
- 2.6.27.2
- 2.6.27.3
- 2.6.27.4
- 2.6.27.5
- 2.6.27.6
- 2.6.27.7
- 2.6.27.8
- 2.6.27.9
- 2.6.27.10
- 2.6.27.11
- 2.6.27.12
No data.
MRG for RHEL-5
kernel-rt-0:2.6.24.7-111.el5rt
Fixed · RHSA-2009:0451
Red Hat Enterprise Linux 4
kernel-0:2.6.9-78.0.22.EL
Fixed · RHSA-2009:0459
Red Hat Enterprise Linux 5
kernel-0:2.6.18-128.1.6.el5
Fixed · RHSA-2009:0326
| Product | Package | State | Advisory |
|---|---|---|---|
| MRG for RHEL-5 | kernel-rt-0:2.6.24.7-111.el5rt | Fixed | RHSA-2009:0451 |
| Red Hat Enterprise Linux 4 | kernel-0:2.6.9-78.0.22.EL | Fixed | RHSA-2009:0459 |
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-128.1.6.el5 | Fixed | RHSA-2009:0326 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
2.1 LOW NVD
AV:L/AC:L/Au:N/C:N/I:N/A:P
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.70% 0.00698
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.00698
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.70% (0.00698) | 51.41th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.70% (0.00698) | 48.06th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.21% (0.00215) | 42.05th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 0.34th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 0.50th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.00% (0.04005) | 85.96th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.00% (0.04005) | 84.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.00% (0.04005) | 67.83th | v2 (v2022.01.01) |
Weaknesses (1)
References (38)
- http://lists.opensuse.org/opensuse-security-announce/2009-02/msg00003.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00000.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html vendor-advisoryx_refsource_SUSE
- http://osvdb.org/52204 vdb-entryx_refsource_OSVDB
- http://rhn.redhat.com/errata/RHSA-2009-0459.html vendor-advisoryx_refsource_REDHAT
- http://scary.beasts.org/security/CESA-2009-002.html x_refsource_MISC
- http://scarybeastsecurity.blogspot.com/2009/02/linux-kernel-minor-signal-vulnerability.html x_refsource_MISC
- http://secunia.com/advisories/33758 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/34033 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/34680 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/34917 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/34962 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/34981 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/35011 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/35120 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/35121 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/35390 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/35394 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/37471 third-party-advisoryx_refsource_SECUNIA
- http://wiki.rpath.com/Advisories:rPSA-2009-0084 x_refsource_CONFIRM
- http://www.debian.org/security/2009/dsa-1787 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2009/dsa-1794 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2009/dsa-1800 vendor-advisoryx_refsource_DEBIAN
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:118 vendor-advisoryx_refsource_MANDRIVA
- http://www.redhat.com/support/errata/RHSA-2009-0326.html vendor-advisoryx_refsource_REDHAT
- http://www.redhat.com/support/errata/RHSA-2009-0451.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/archive/1/503610/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/archive/1/507985/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/33906 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/usn-751-1 vendor-advisoryx_refsource_UBUNTU
- http://www.vmware.com/security/advisories/VMSA-2009-0016.html x_refsource_CONFIRM
- http://www.vupen.com/english/advisories/2009/3316 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2009-0028 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=479932 x_refsource_CONFIRMIssue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2009-0028
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11187 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7947 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2009-0028
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Feb 27, 2009
Updated Aug 7, 2024
Reserved Dec 15, 2008
Link CVE-2009-0028
CISA Vulnrichment
Updated n/a