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.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2019-11-07T21:31:50

Updated: 2024-08-07T14:28:52.054Z

Reserved: 2007-07-12T00:00:00

Link: CVE-2007-3732

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2019-11-07T22:15:10.070

Modified: 2019-11-12T15:18:19.297

Link: CVE-2007-3732

cve-icon Redhat

No data.