{"id":"CVE-2009-1527","aliases":["BELL-CVE-2009-1527","EUVD-2009-1523","GHSA-5xgr-5h52-x493"],"status":"published","title":"Race condition in the ptrace_attach function in kernel/ptrace.c in the Linux kernel before 2.6.30...","description":"Race condition in the ptrace_attach function in kernel/ptrace.c in the Linux kernel before 2.6.30-rc4 allows local users to gain privileges via a PTRACE_ATTACH ptrace call during an exec system call that is launching a setuid application, related to locking an incorrect cred_exec_mutex object.","severity":{"version":"2.0","score":6.9,"vector":"AV:L/AC:M/Au:N/C:C/I:C/A:C","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00492,"percentile":0.42576,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-362"],"published":"2009-05-05T20:00:00Z","modified":"2026-06-16T23:07:27Z","exploits":[{"source":"exploitdb","id":"EDB-8673","title":"Linux Kernel 2.6.x (Gentoo 2.6.29rc1) - 'ptrace_attach' Local Privilege Escalation","type":"local","platform":"linux","date":"2009-05-13","verified":true,"url":"https://www.exploit-db.com/exploits/8673"}],"products":[{"vendor":"linux","product":"linux_kernel"}],"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/50293","tags":["vdb-entry","x_refsource_XF","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://www.securityfocus.com/archive/1/503610/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://www.osvdb.org/54188","tags":["vdb-entry","x_refsource_OSVDB","x_transferred","Broken Link"]},{"url":"http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.30-rc4","tags":["x_refsource_CONFIRM","x_transferred","Broken Link"]},{"url":"http://secunia.com/advisories/35120","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Broken Link"]},{"url":"http://www.openwall.com/lists/oss-security/2009/05/04/2","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory"]},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=cad81bc2529ab8c62b6fdc83a1c0c7f4a87209eb","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.vupen.com/english/advisories/2009/1236","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","Not Applicable"]},{"url":"http://www.securityfocus.com/bid/34799","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://wiki.rpath.com/Advisories:rPSA-2009-0084","tags":["x_refsource_CONFIRM","x_transferred","Broken Link"]},{"url":"http://secunia.com/advisories/34977","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Broken Link"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-1527"},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=cad81bc2529ab8c62b6fdc83a1c0c7f4a87209eb"},{"url":"https://github.com/advisories/GHSA-5xgr-5h52-x493"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2009-1527","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2009-1527","description":"Race condition in the ptrace_attach function in kernel/ptrace.c in the Linux kernel before 2.6.30-rc4 allows local users to gain privileges via a PTRACE_ATTACH ptrace call during an exec system call that is launching a setuid application, related to locking an incorrect cred_exec_mutex object.","status":"published","published":"2009-05-05T20:00:00Z","modified":"2024-08-07T05:13:25.585Z","updated_at":"2026-11-02T14:33:25.126493Z"}],"euvd":[{"id":"EUVD-2009-1523","description":"Race condition in the ptrace_attach function in kernel/ptrace.c in the Linux kernel before 2.6.30-rc4 allows local users to gain privileges via a PTRACE_ATTACH ptrace call during an exec system call that is launching a setuid application, related to locking an incorrect cred_exec_mutex object.","status":"published","published":"2009-05-05T20:00:00Z","modified":"2024-08-07T05:13:25Z","updated_at":"2026-11-03T01:39:21.330306Z"}],"ghsa":[{"id":"GHSA-5xgr-5h52-x493","title":"Race condition in the ptrace_attach function in kernel/ptrace.c in the Linux kernel before 2.6.30...","description":"Race condition in the ptrace_attach function in kernel/ptrace.c in the Linux kernel before 2.6.30-rc4 allows local users to gain privileges via a PTRACE_ATTACH ptrace call during an exec system call that is launching a setuid application, related to locking an incorrect cred_exec_mutex object.","status":"published","published":"2022-05-02T03:26:06Z","modified":"2025-04-09T04:10:20Z","cwes":["CWE-362"],"updated_at":"2026-11-02T15:01:00.026247Z"}],"nvd":[{"id":"CVE-2009-1527","description":"Race condition in the ptrace_attach function in kernel/ptrace.c in the Linux kernel before 2.6.30-rc4 allows local users to gain privileges via a PTRACE_ATTACH ptrace call during an exec system call that is launching a setuid application, related to locking an incorrect cred_exec_mutex object.","status":"published","published":"2009-05-05T20:30:00.313Z","modified":"2026-06-16T23:07:27.387Z","cvss":[{"version":"2.0","score":6.9,"vector":"AV:L/AC:M/Au:N/C:C/I:C/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-362"],"updated_at":"2026-11-02T14:01:35.136779Z"}],"osv":[{"id":"BELL-CVE-2009-1527","title":"CVE-2009-1527 does not affect BellSoft software","status":"withdrawn","published":"2009-05-05T20:30:00Z","modified":"2026-01-28T07:22:08.552212Z","cvss":[{"version":"2.0","score":6.9,"vector":"AV:L/AC:M/Au:N/C:C/I:C/A:C","level":"medium"}],"updated_at":"2026-11-02T15:28:12.886815Z"}]}}