kernel: Reset %fs early in iret_exc
Published Nov 7, 2019
5.5
MEDIUMCVSS 3.1
EPSS 0.38%
Description
In Linux 2.6 before 2.6.23, the TRACE_IRQS_ON function in iret_exc calls a C function without ensuring that the segments are set properly. The kernel's %fs needs to be restored before the call in TRACE_IRQS_ON and before enabling interrupts, so that "current" references work. Without this, "current" used in the window between iret_exc and the middle of error_code where %fs is reset, would crash.
Affected products
-
- Version 2.6 before 2.6.23StatusaffectedConstraints-
- Version
- ≥ 2.6.0 · < 2.6.23
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:M/Au:N/C:N/I:N/A:P
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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.38% (0.00378) | 29.31th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.38% (0.00378) | 29.31th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.15% (0.00153) | 33.42th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.05% (0.00052) | 22.60th | v3 (v2023.03.01) |
| May 25, 2024 | 0.04% (0.00044) | 12.27th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 10.26th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00890) | 30.33th | v2 (v2022.01.01) |
| Feb 13, 2023 | 0.89% (0.00890) | 29.93th | v2 (v2022.01.01) |
| Feb 3, 2023 | 0.95% (0.00950) | 31.66th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.89% (0.00890) | 28.64th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00890) | 26.62th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00890) | 12.04th | v2 (v2022.01.01) |
No CWE recorded.
References (7)
- https://access.redhat.com/security/cve/CVE-2007-3732 Vendor Advisory
- https://access.redhat.com/security/cve/cve-2007-3732 x_refsource_MISCThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=248353 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2007-3732 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2007-3732
- https://security-tracker.debian.org/tracker/CVE-2007-3732 x_refsource_MISCThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2007-3732
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2007-3732 | Vendor Advisory | |
| https://access.redhat.com/security/cve/cve-2007-3732 | x_refsource_MISCThird Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=248353 | Issue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2007-3732 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2007-3732 | ||
| https://security-tracker.debian.org/tracker/CVE-2007-3732 | x_refsource_MISCThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2007-3732 |
Change history (0)
No recorded changes yet.