kernel: local denial of service due to NT bit leakage
Published Jan 9, 2007
4.9
MEDIUMCVSS 2.0
EPSS 0.41%
Description
Linux kernel before 2.6.18, when running on x86_64 systems, does not properly save or restore EFLAGS during a context switch, which allows local users to cause a denial of service (crash) by causing SYSENTER to set an NT flag, which can trigger a crash on the IRET of the next task.
Affected products
No data.
- ≤ 2.6.17
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-92.1.18.el5
Fixed · RHSA-2008:0957
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-92.1.18.el5 | Fixed | RHSA-2008:0957 |
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.
AV:L/AC:L/Au:N/C:N/I:N/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 3, 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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.41% (0.00409) | 32.79th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.40% (0.00396) | 31.13th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.04% (0.00045) | 10.91th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.27% (0.00275) | 68.94th | v3 (v2023.03.01) |
| Jun 3, 2024 | 0.27% (0.00275) | 68.03th | v3 (v2023.03.01) |
| Mar 6, 2024 | 0.14% (0.00140) | 48.65th | 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) |
No CWE recorded.
References (20)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=658fdbef66e5e9be79b457edc2cbbb3add840aa9 x_refsource_CONFIRM
- http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=658fdbef66e5e9be79b457edc2cbbb3add840aa9 x_refsource_CONFIRM
- http://secunia.com/advisories/24098 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/25691 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/26620 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/26994 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/32485 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2007/dsa-1381 vendor-advisoryx_refsource_DEBIAN
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.18 x_refsource_CONFIRM
- http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.18-git13.log x_refsource_CONFIRM
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:171 vendor-advisoryx_refsource_MANDRIVA
- http://www.redhat.com/support/errata/RHSA-2008-0957.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/archive/1/471457 mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/26060 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/usn-416-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2006-5755 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=457718 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2006-5755
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9554 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2006-5755
Change history (0)
No recorded changes yet.