Integer overflow in the hrtimer_start function in kernel/hrtimer.c in the Linux kernel…
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Complete · Complete · Complete
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-189 and the CVSS impact.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 11
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:2.6.23:*:*:*:*:*:*:* | 2.6.23 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.23:rc1:*:*:*:*:*:* | 2.6.23 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.23:rc2:*:*:*:*:*:* | 2.6.23 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.23.1:*:*:*:*:*:*:* | 2.6.23.1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.23.2:*:*:*:*:*:*:* | 2.6.23.2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.23.3:*:*:*:*:*:*:* | 2.6.23.3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.23.4:*:*:*:*:*:*:* | 2.6.23.4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.23.5:*:*:*:*:*:*:* | 2.6.23.5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.23.6:*:*:*:*:*:*:* | 2.6.23.6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.23.7:*:*:*:*:*:*:* | 2.6.23.7 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:2.6.23:*:*:*:*:*:*:* Versions 2.6.23 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.23:rc1:*:*:*:*:*:* Versions 2.6.23 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.23:rc2:*:*:*:*:*:* Versions 2.6.23 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.23.1:*:*:*:*:*:*:* Versions 2.6.23.1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.23.2:*:*:*:*:*:*:* Versions 2.6.23.2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.23.3:*:*:*:*:*:*:* Versions 2.6.23.3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.23.4:*:*:*:*:*:*:* Versions 2.6.23.4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.23.5:*:*:*:*:*:*:* Versions 2.6.23.5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.23.6:*:*:*:*:*:*:* Versions 2.6.23.6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.23.7:*:*:*:*:*:*:* Versions 2.6.23.7 Vulnerable ·Linux
Remediation
Red Hat 3 advisories
- RHSA-2010:0079 Released 2010-02-02 · Red Hat rating Importantkernel security and bug fix update
- Red Hat Enterprise Linux EUS (v. 5.2 server) kernel-2.6.18-92.1.35.el5, kernel-2.6.18-92.1.35.el5.ia64, kernel-PAE-2.6.18-92.1.35.el5 +14
- RHSA-2009:1193 Released 2009-08-04 · Red Hat rating Importantkernel security and bug fix update
- Red Hat Enterprise Linux (v. 5 server) kernel-2.6.18-128.4.1.el5, kernel-2.6.18-128.4.1.el5.ia64, kernel-PAE-2.6.18-128.4.1.el5 +18
- Red Hat Enterprise Linux Desktop (v. 5 client) kernel-2.6.18-128.4.1.el5, kernel-PAE-2.6.18-128.4.1.el5, kernel-PAE-devel-2.6.18-128.4.1.el5 +8
- Red Hat Enterprise Linux EUS (v. 5.3 server) kernel-2.6.18-128.4.1.el5, kernel-2.6.18-128.4.1.el5.ia64, kernel-PAE-2.6.18-128.4.1.el5 +18
- RHSA-2008:0585 Released 2008-08-26 · Red Hat rating Importantkernel security and bug fix update
- MRG Realtime for RHEL 5 Server kernel-rt-2.6.24.7-74.el5rt, kernel-rt-debug-2.6.24.7-74.el5rt, kernel-rt-debug-devel-2.6.24.7-74.el5rt +6
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| MRG Realtime for RHEL 5 Server | Fixed | RHSA-2008:0585 |
| Red Hat Enterprise Linux (v. 5 server) | Fixed | RHSA-2009:1193 |
| Red Hat Enterprise Linux Desktop (v. 5 client) | Fixed | RHSA-2009:1193 |
| Red Hat Enterprise Linux EUS (v. 5.2 server) | Fixed | RHSA-2010:0079 |
| Red Hat Enterprise Linux EUS (v. 5.3 server) | Fixed | RHSA-2009:1193 |
Not affected: 1 product
- Red Hat Enterprise Linux EUS (v. 5.2 server)
Timeline
- 2026-10-02 Threatist record created from CVE-2007-5966
- 2026-10-03 Alias added: GHSA-hxg4-56f9-vxrp
References
More Linux Kernel vulnerabilities
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- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2007-5966 · CVE Program
- CVE-2007-5966 · NVD
- FIRST EPSS
- GHSA-hxg4-56f9-vxrp · GitHub Advisory Database · CC BY 4.0
- CVE-2007-5966 · Red Hat security data · CC BY 4.0
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