MEDIUM
kernel: 'kill sig -1' must only apply to caller's pid namespace
Published Apr 22, 2009
4.6
MEDIUMCVSS 2.0
EPSS 0.39%
Description
The kill_something_info function in kernel/signal.c in the Linux kernel before 2.6.28 does not consider PID namespaces when processing signals directed to PID -1, which allows local users to bypass the intended namespace isolation, and send arbitrary signals to all processes in all namespaces, via a kill command.
Affected products
No data.
OR
- ≤ 2.6.27.21
- 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
- 2.6.18
- 2.6.18
- 2.6.18
- 2.6.18
- 2.6.18
- 2.6.18
- 2.6.18
- 2.6.18
- 2.6.19.4
- 2.6.19.5
- 2.6.19.6
- 2.6.19.7
- 2.6.20.16
- 2.6.20.17
- 2.6.20.18
- 2.6.20.19
- 2.6.20.20
- 2.6.20.21
- 2.6.21.5
- 2.6.21.6
- 2.6.21.7
- 2.6.22
- 2.6.22.1
- 2.6.22.2
- 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
- 2.6.22.17
- 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
- 2.6.23.8
- 2.6.23.9
- 2.6.23.10
- 2.6.23.11
- 2.6.23.12
- 2.6.23.13
- 2.6.23.15
- 2.6.23.16
- 2.6.23.17
- 2.6.23_rc1
- 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
- 2.6.26
- 2.6.26.1
- 2.6.26.2
- 2.6.26.3
- 2.6.26.4
- 2.6.26.5
- 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
- 2.6.27.13
- 2.6.27.14
- 2.6.27.15
- 2.6.27.16
- 2.6.27.17
- 2.6.27.18
- 2.6.27.19
- 2.6.27.20
No data.
MRG for RHEL-5
kernel-rt-0:2.6.24.7-117.el5rt
Fixed · RHSA-2009:1081
| Product | Package | State | Advisory |
|---|---|---|---|
| MRG for RHEL-5 | kernel-rt-0:2.6.24.7-117.el5rt | Fixed | RHSA-2009:1081 |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, 4, and 5.
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.
4.6 MEDIUM NVD
AV:L/AC:L/Au:N/C:P/I:P/A:P
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.39% 0.00392
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.00392
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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.39% (0.00392) | 30.91th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.39% (0.00392) | 30.71th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.08% (0.00083) | 21.86th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00044) | 11.89th | v3 (v2023.03.01) |
| Jul 2, 2024 | 0.04% (0.00044) | 10.25th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 8.24th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.55% (0.01547) | 74.98th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.55% (0.01547) | 74.94th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.55% (0.01547) | 72.92th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.55% (0.01547) | 51.82th | v2 (v2022.01.01) |
Weaknesses (1)
References (22)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d25141a818383b3c3b09f065698c544a7a0ec6e7 x_refsource_CONFIRM
- http://lkml.org/lkml/2008/7/23/148 mailing-listx_refsource_MLISTPatch
- http://secunia.com/advisories/34981 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/35343 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/35656 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-1800 vendor-advisoryx_refsource_DEBIAN
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28 x_refsource_CONFIRMPatchVendor Advisory
- http://www.openwall.com/lists/oss-security/2009/04/16/2 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2009/04/17/4 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2009/04/21/1 mailing-listx_refsource_MLIST
- http://www.redhat.com/support/errata/RHSA-2009-1081.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/archive/1/503610/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.ubuntu.com/usn/usn-793-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2009-1338 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=496031 x_refsource_CONFIRMPatchIssue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/50386 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2009-1338
- https://www.cve.org/CVERecord?id=CVE-2009-1338
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Apr 22, 2009
Updated Aug 7, 2024
Reserved Apr 17, 2009
Link CVE-2009-1338
CISA Vulnrichment
Updated n/a