{"id":"CVE-2010-0306","aliases":["DSA-1996-1","DSA-2010-1","EUVD-2010-0337","GHSA-xpcm-5q5j-h76x","RHSA-2010:0088","RHSA-2010:0095"],"status":"published","title":"The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does...","description":"The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does not use the Current Privilege Level (CPL) and I/O Privilege Level (IOPL) to restrict instruction execution, which allows guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, and replacing an instruction in between emulator entry and instruction fetch, a related issue to CVE-2010-0298.","severity":{"version":"2.0","score":4.1,"vector":"AV:L/AC:M/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.00378,"percentile":0.32034,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-264"],"published":"2010-02-12T00:00:00Z","modified":"2026-06-29T10:02:59Z","affected":[{"source":"osv","ecosystem":"Debian:5.0","package":"linux-2.6","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.26-21lenny3"}]}],"versions":["2.6.26-13","2.6.26-13lenny2","2.6.26-13lenny2~bpo40+1","2.6.26-14","2.6.26-15","2.6.26-15lenny1","2.6.26-15lenny2","2.6.26-15lenny3","2.6.26-15~bpo40+1","2.6.26-15~bpo40+2","2.6.26-16","2.6.26-17","2.6.26-17lenny1","2.6.26-17lenny2","2.6.26-17lenny2~bpo40+1","2.6.26-17~bpo40+1","2.6.26-18","2.6.26-19","2.6.26-19lenny1","2.6.26-19lenny2","2.6.26-19~bpo40+1","2.6.26-20","2.6.26-20~bpo40+1","2.6.26-21","2.6.26-21lenny1","2.6.26-21lenny2","2.6.26-21~bpo40+1"],"bundled":13},{"source":"osv","ecosystem":"Debian:5.0","package":"kvm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"72+dfsg-5~lenny5"}]}],"versions":["72+dfsg-4","72+dfsg-5~lenny1","72+dfsg-5~lenny2","72+dfsg-5~lenny3","72+dfsg-5~lenny4"],"bundled":4},{"source":"osv","ecosystem":"Red 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