The exit_thread function (process.c) in Linux kernel 2.6 through 2.6.5 does not invalidate the per-TSS io_bitmap pointers if a process obtains IO access permissions from the ioperm function but does not drop those permissions when it exits, which allows other processes to access the per-TSS pointers, access restricted memory locations, and possibly gain privileges.
Advisories
Source ID Title
EUVD EUVD EUVD-2004-2527 The exit_thread function (process.c) in Linux kernel 2.6 through 2.6.5 does not invalidate the per-TSS io_bitmap pointers if a process obtains IO access permissions from the ioperm function but does not drop those permissions when it exits, which allows other processes to access the per-TSS pointers, access restricted memory locations, and possibly gain privileges.
Fixes

Solution

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Workaround

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-08T01:29:13.720Z

Reserved: 2005-10-25T00:00:00

Link: CVE-2004-2536

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2004-12-31T05:00:00.000

Modified: 2025-04-03T01:03:51.193

Link: CVE-2004-2536

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses