{"id":"CVE-2004-0565","aliases":["DSA-1067-1","DSA-1069-1","DSA-1070-1","DSA-1082-1","EUVD-2004-0564","GHSA-g33f-v4ch-cw4g","RHSA-2004:689"],"status":"published","title":"Floating point information leak in the context switch code for Linux 2.4.x only checks the MFH...","description":"Floating point information leak in the context switch code for Linux 2.4.x only checks the MFH bit but does not verify the FPH owner, which allows local users to read register values of other processes by setting the MFH bit.","severity":{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00444,"percentile":0.38846,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2004-07-08T04:00:00Z","modified":"2026-06-26T10:01:52Z","affected":[{"source":"osv","ecosystem":"Debian:3.0","package":"kernel-source-2.4.16","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.16-1woody2"}]}],"bundled":30},{"source":"osv","ecosystem":"Debian:3.0","package":"kernel-source-2.4.18","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.18-14.4"}]}],"versions":["2.4.18-14.3"],"bundled":29},{"source":"osv","ecosystem":"Debian:3.0","package":"kernel-image-sparc-2.4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"26woody1"}]}],"versions":["26"],"bundled":30},{"source":"osv","ecosystem":"Debian:3.0","package":"kernel-patch-2.4.19-mips","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.19-0.020911.1.woody5"}]}],"versions":["2.4.19-0.020911.1.woody4"],"bundled":30},{"source":"osv","ecosystem":"Debian:3.0","package":"kernel-source-2.4.19","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.19-4.woody3"}]}],"versions":["2.4.19-4.woody2"],"bundled":30},{"source":"osv","ecosystem":"Debian:3.0","package":"kernel-source-2.4.17","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.17-1woody4"}]}],"versions":["2.4.17-1woody3"],"bundled":30},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::as","package":"kernel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::as","package":"kernel-BOOT","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::as","package":"kernel-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::as","package":"kernel-doc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::as","package":"kernel-hugemem","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::as","package":"kernel-hugemem-unsupported","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::as","package":"kernel-smp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::as","package":"kernel-smp-unsupported","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::as","package":"kernel-source","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::as","package":"kernel-unsupported","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::desktop","package":"kernel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::desktop","package":"kernel-BOOT","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::desktop","package":"kernel-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::desktop","package":"kernel-doc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::desktop","package":"kernel-hugemem","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::desktop","package":"kernel-hugemem-unsupported","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::desktop","package":"kernel-smp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::desktop","package":"kernel-smp-unsupported","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::desktop","package":"kernel-source","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::desktop","package":"kernel-unsupported","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::es","package":"kernel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::es","package":"kernel-BOOT","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::es","package":"kernel-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::es","package":"kernel-doc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::es","package":"kernel-hugemem","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::es","package":"kernel-hugemem-unsupported","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::es","package":"kernel-smp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::es","package":"kernel-smp-unsupported","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::es","package":"kernel-source","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::es","package":"kernel-unsupported","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::ws","package":"kernel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::ws","package":"kernel-BOOT","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::ws","package":"kernel-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::ws","package":"kernel-doc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::ws","package":"kernel-hugemem","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::ws","package":"kernel-hugemem-unsupported","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::ws","package":"kernel-smp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::ws","package":"kernel-smp-unsupported","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::ws","package":"kernel-source","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:3::ws","package":"kernel-unsupported","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.21-27.0.1.EL"}]}],"bundled":7}],"products":[{"vendor":"gentoo","product":"linux"},{"vendor":"linux","product":"linux_kernel"},{"vendor":"mandrakesoft","product":"mandrake_linux"},{"vendor":"mandrakesoft","product":"mandrake_linux_corporate_server"},{"vendor":"mandrakesoft","product":"mandrake_multi_network_firewall"},{"vendor":"trustix","product":"secure_linux"}],"references":[{"url":"http://secunia.com/advisories/20163","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"http://archives.neohapsis.com/archives/linux/owl/2004-q2/0038.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Vendor Advisory"]},{"url":"http://www.debian.org/security/2006/dsa-1082","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred"]},{"url":"http://www.debian.org/security/2006/dsa-1070","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred"]},{"url":"http://secunia.com/advisories/20162","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10714","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"http://www.debian.org/security/2006/dsa-1067","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred"]},{"url":"http://www.debian.org/security/2006/dsa-1069","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred"]},{"url":"http://www.securityfocus.com/bid/10687","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=124734","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"http://www.mandriva.com/security/advisories?name=MDKSA-2004:066","tags":["vendor-advisory","x_refsource_MANDRAKE","x_transferred"]},{"url":"http://secunia.com/advisories/20202","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"http://www.redhat.com/support/errata/RHSA-2004-504.html","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/16644","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://secunia.com/advisories/20338","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2004-0565","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-g33f-v4ch-cw4g"},{"url":"https://access.redhat.com/errata/RHSA-2004:689","tags":["advisory"]},{"url":"https://access.redhat.com/security/updates/classification/#important","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=124734","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=126126","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=142729","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=142748","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=142964","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=142965","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2004/rhsa-2004_689.json","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2004-0565","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1617231","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2004-0565","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2004-1016","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1617350","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2004-1016","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2004-1016","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2004-1017","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1617351","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2004-1017","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2004-1017","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2004-1137","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1617372","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2004-1137","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2004-1137","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2004-1144","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1617379","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2004-1144","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2004-1144","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2004-1234","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1617396","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2004-1234","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2004-1234","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2004-1335","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1617408","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2004-1335","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2004-1335","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2004-0565","description":"Floating point information leak in the context switch code for Linux 2.4.x only checks the MFH bit but does not verify the FPH owner, which allows local users to read register values of other processes by setting the MFH bit.","status":"published","published":"2004-07-08T04:00:00Z","modified":"2024-08-08T00:24:25.856Z","updated_at":"2026-11-02T14:34:55.098814Z"}],"euvd":[{"id":"EUVD-2004-0564","description":"Floating point information leak in the context switch code for Linux 2.4.x only checks the MFH bit but does not verify the FPH owner, which allows local users to read register values of other processes by setting the MFH bit.","status":"published","published":"2004-07-08T04:00:00Z","modified":"2024-08-08T00:24:25Z","updated_at":"2026-11-03T01:15:18.677356Z"}],"ghsa":[{"id":"GHSA-g33f-v4ch-cw4g","title":"Floating point information leak in the context switch code for Linux 2.4.x only checks the MFH...","description":"Floating point information leak in the context switch code for Linux 2.4.x only checks the MFH bit but does not verify the FPH owner, which allows local users to read register values of other processes by setting the MFH bit.","status":"published","published":"2022-04-29T02:57:57Z","modified":"2023-01-30T05:02:44Z","updated_at":"2026-11-02T14:46:42.642348Z"}],"nvd":[{"id":"CVE-2004-0565","description":"Floating point information leak in the context switch code for Linux 2.4.x only checks the MFH bit but does not verify the FPH owner, which allows local users to read register values of other processes by setting the MFH bit.","status":"published","published":"2004-12-06T05:00:00Z","modified":"2026-06-16T22:05:53.297Z","cvss":[{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"updated_at":"2026-11-02T14:00:51.985436Z"}],"osv":[{"id":"DSA-1067-1","title":"kernel-source-2.4.16 - several","status":"published","published":"2006-05-20T00:00:00Z","modified":"2026-03-09T01:01:45.180005Z","updated_at":"2026-11-02T15:46:14.285228Z"},{"id":"DSA-1069-1","title":"kernel-source-2.4.18 - several","status":"published","published":"2006-05-20T00:00:00Z","modified":"2026-03-09T01:00:58.426047Z","updated_at":"2026-11-02T15:46:14.285228Z"},{"id":"DSA-1070-1","title":"kernel-source-2.4.19 - several vulnerabilities","status":"published","published":"2006-05-21T00:00:00Z","modified":"2026-03-09T01:00:55.456662Z","updated_at":"2026-11-02T15:46:14.285228Z"},{"id":"DSA-1082-1","title":"kernel-source-2.4.17 - several vulnerabilities","status":"published","published":"2006-05-29T00:00:00Z","modified":"2026-03-09T01:02:02.437793Z","updated_at":"2026-11-02T15:46:14.285228Z"},{"id":"RHSA-2004:689","title":"Red Hat Security Advisory: kernel security update","status":"published","published":"2024-09-15T15:04:12Z","modified":"2026-06-26T10:01:52Z","updated_at":"2026-11-02T15:52:59.135214Z"}]}}