CVE-2007-3732

Severity

55%

Complexity

18%

Confidentiality

60%

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.

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.

CVSS 3.1 Base Score 5.5. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

CVSS 2.0 Base Score 1.9. CVSS Attack Vector: local. CVSS Attack Complexity: medium. CVSS Vector: (AV:L/AC:M/Au:N/C:N/I:N/A:P).

Overview

First reported 5 years ago

2019-11-07 22:15:00

Last updated 5 years ago

2019-11-12 15:18:00

Affected Software

Linux Kernel

References

https://access.redhat.com/security/cve/cve-2007-3732

Third Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2007-3732

Issue Tracking, Patch, Third Party Advisory

https://security-tracker.debian.org/tracker/CVE-2007-3732

Third Party Advisory

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