{"id":"CVE-2004-2536","aliases":["EUVD-2004-2527","GHSA-93h5-jmg6-mmph"],"status":"published","title":"The exit_thread function (process.c) in Linux kernel 2.6 through 2.6.5 does not invalidate the...","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.","severity":{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02338,"percentile":0.83709,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2004-12-31T05:00:00Z","modified":"2026-06-16T22:09:50Z","products":[{"vendor":"linux","product":"linux_kernel"}],"references":[{"url":"http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.6","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/16106","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.osvdb.org/5997","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://www.securityfocus.com/bid/10302","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://www.ussg.iu.edu/hypermail/linux/kernel/0405.0/1242.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Exploit","Patch"]},{"url":"http://secunia.com/advisories/11577","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://www.ussg.iu.edu/hypermail/linux/kernel/0405.0/1265.html","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2004-2536"},{"url":"https://github.com/advisories/GHSA-93h5-jmg6-mmph"}],"sources":{"cve":[{"id":"CVE-2004-2536","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.","status":"published","published":"2005-10-25T04:00:00Z","modified":"2024-08-08T01:29:13.72Z","updated_at":"2026-11-02T14:34:53.357376Z"}],"euvd":[{"id":"EUVD-2004-2527","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.","status":"published","published":"2005-10-25T04:00:00Z","modified":"2024-08-08T01:29:13Z","updated_at":"2026-11-03T01:15:10.048939Z"}],"ghsa":[{"id":"GHSA-93h5-jmg6-mmph","title":"The exit_thread function (process.c) in Linux kernel 2.6 through 2.6.5 does not invalidate the...","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.","status":"published","published":"2022-04-29T03:01:38Z","modified":"2023-01-30T05:04:10Z","updated_at":"2026-11-02T14:46:58.911326Z"}],"nvd":[{"id":"CVE-2004-2536","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.","status":"published","published":"2004-12-31T05:00:00Z","modified":"2026-06-16T22:09:50.237Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:00:53.133049Z"}]}}