{"id":"CVE-2007-4573","aliases":["DSA-1378-1","DSA-1378-2","DSA-1381-2","DSA-1504-1","EUVD-2007-4555","GHSA-jqfp-qwq6-6w3h","RHSA-2007:0936","RHSA-2007:0937","RHSA-2007:0938"],"status":"published","title":"The IA32 system call emulation functionality in Linux kernel 2.4.x and 2.6.x before 2.6.22.7,...","description":"The IA32 system call emulation functionality in Linux kernel 2.4.x and 2.6.x before 2.6.22.7, when running on the x86_64 architecture, does not zero extend the eax register after the 32bit entry path to ptrace is used, which might allow local users to gain privileges by triggering an out-of-bounds access to the system call table using the %RAX register.","severity":{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.0082,"percentile":0.57506,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-264"],"published":"2007-09-24T22:00:00Z","modified":"2026-06-26T12:18:03Z","exploits":[{"source":"exploitdb","id":"EDB-30604","title":"Linux Kernel 2.6.x - Ptrace Privilege Escalation","type":"local","platform":"linux","date":"2007-09-21","verified":true,"url":"https://www.exploit-db.com/exploits/30604"},{"source":"exploitdb","id":"EDB-4460","title":"Linux Kernel 2.4/2.6 (x86-64) - System Call Emulation Privilege Escalation","type":"local","platform":"linux_x86-64","date":"2007-09-27","verified":true,"url":"https://www.exploit-db.com/exploits/4460"}],"fixes":[{"ecosystem":"Red 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