{"cve":"CVE-2004-2536","nvd":{"published":"2004-12-31T05:00:00.000","modified":"2026-06-16T22:09:50.237","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://secunia.com/advisories/11577","http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.6","http://www.osvdb.org/5997","http://www.securityfocus.com/bid/10302","http://www.ussg.iu.edu/hypermail/linux/kernel/0405.0/1242.html"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T19:38:22.000386253+00:00"},"epss":{"cve":"CVE-2004-2536","score":0.02338,"percentile":0.83602,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}