CVE-2004-2536: n/a vulnerability

CVE-2004-2536: The exit_thread function (process.c) in Linux kernel 2.6 through 2.6.5 does not invalidate the per-TSS io_b...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 8, 2024, 01:29 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old Linux kernel flaw where a process could leave behind I/O permission state when it exits. Another process might then misuse that stale kernel state to reach restricted memory and possibly gain higher privileges. Exposure is limited to Linux kernel 2.6 through 2.6.5 according to the CVE source bundle. Likely exposure is legacy systems still running Linux kernel 2.6.0 through 2.6.5. Modern supported Linux distributions should not normally be affected, but embedded, frozen appliance, or unmanaged legacy images should be checked explicitly. Treat this as high priority only where legacy Linux 2.6.0 through 2.6.5 remains in use. The business risk is local privilege escalation on obsolete systems, not a current internet-scale vulnerability based on the supplied evidence. Mitigation focus: Inventory Linux systems for kernel versions 2.6.0 through 2.6.5.; Move affected hosts to a vendor-supported fixed kernel release.; Check kernel.org 2.6.6 changelog and distribution advisories for exact fix guidance..

Prepared: Jun 29, 2026, 17:30 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Oct 25, 2005, 04:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
linux-exitthread-gain-privileges(16106)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

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