kernel: non-root can trigger cpu_idle soft lockup
Published Dec 20, 2007
7.2
HIGHCVSS 2.0
EPSS 0.48%
Description
Integer overflow in the hrtimer_start function in kernel/hrtimer.c in the Linux kernel before 2.6.23.10 allows local users to execute arbitrary code or cause a denial of service (panic) via a large relative timeout value. NOTE: some of these details are obtained from third party information.
Affected products
No data.
- 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
- 2.6.23.9
No data.
MRG for RHEL-5
kernel-rt-0:2.6.24.7-74.el5rt
Fixed · RHSA-2008:0585
Red Hat Enterprise Linux 5
kernel-0:2.6.18-128.4.1.el5
Fixed · RHSA-2009:1193
Red Hat Enterprise Linux 5.2 Z Stream
kernel-0:2.6.18-92.1.35.el5
Fixed · RHSA-2010:0079
Red Hat Enterprise Linux 5.3.Z - Server Only
kernel-0:2.6.18-128.4.1.el5
Fixed · RHSA-2009:1193
| Product | Package | State | Advisory |
|---|---|---|---|
| MRG for RHEL-5 | kernel-rt-0:2.6.24.7-74.el5rt | Fixed | RHSA-2008:0585 |
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-128.4.1.el5 | Fixed | RHSA-2009:1193 |
| Red Hat Enterprise Linux 5.2 Z Stream | kernel-0:2.6.18-92.1.35.el5 | Fixed | RHSA-2010:0079 |
| Red Hat Enterprise Linux 5.3.Z - Server Only | kernel-0:2.6.18-128.4.1.el5 | Fixed | RHSA-2009:1193 |
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, and 4.
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.
AV:L/AC:L/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.48% (0.00478) | 38.94th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.48% (0.00478) | 37.30th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.09% (0.00090) | 23.53th | 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 | 2.17% (0.02172) | 80.27th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.34th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.15th | v2 (v2022.01.01) |
References (28)
- http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.10 x_refsource_CONFIRM
- http://lists.opensuse.org/opensuse-security-announce/2008-02/msg00002.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/28088 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/28105 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/28141 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/28706 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/28806 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/31628 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/36131 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/37471 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2007/dsa-1436 vendor-advisoryx_refsource_DEBIAN
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:112 vendor-advisoryx_refsource_MANDRIVA
- http://www.redhat.com/support/errata/RHSA-2008-0585.html vendor-advisoryx_refsource_REDHAT
- http://www.redhat.com/support/errata/RHSA-2009-1193.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/archive/1/485282/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/archive/1/507985/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/26880 vdb-entryx_refsource_BIDPatch
- http://www.ubuntu.com/usn/usn-574-1 vendor-advisoryx_refsource_UBUNTU
- http://www.vmware.com/security/advisories/VMSA-2009-0016.html x_refsource_CONFIRM
- http://www.vupen.com/english/advisories/2007/4225 vdb-entryx_refsource_VUPEN
- http://www.vupen.com/english/advisories/2009/3316 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2007-5966 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=453135 Issue Tracking
- https://issues.rpath.com/browse/RPL-2038 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2007-5966
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10774 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8125 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2007-5966
Change history (0)
No recorded changes yet.