CVE-2007-3732

MEDIUM

Linux Kernel 2.6.0-2.6.22 - Denial of Service via Improper Segment Handling in TRACE_IRQS_ON

Title source: llm
STIX 2.1

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.

References (3)

Core 3
Core References
Third Party Advisory x_refsource_misc
https://security-tracker.debian.org/tracker/CVE-2007-3732
Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2007-3732
Third Party Advisory x_refsource_misc
https://access.redhat.com/security/cve/cve-2007-3732

Scores

CVSS v3 5.5
EPSS 0.0038
EPSS Percentile 30.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

Status published
Products (1)
linux/linux_kernel 2.6.0 - 2.6.23
Published Nov 07, 2019
Tracked Since Feb 18, 2026