{"id":"CVE-2019-13272","aliases":[],"url":"https://o3.security/vulnerability/CVE-2019-13272","summary":null,"details":"In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to create a ptrace relationship, which allows local users to obtain root access by leveraging certain scenarios with a parent-child process relationship, where a parent drops privileges and calls execve (potentially allowing control by an attacker). One contributing factor is an object lifetime issue (which can also cause a panic). Another contributing factor is incorrect marking of a ptrace relationship as privileged, which is exploitable through (for example) Polkit's pkexec helper with PTRACE_TRACEME. NOTE: SELinux deny_ptrace might be a usable workaround in some environments.","published":"2019-07-17T13:15:10.687Z","modified":"2026-04-11T08:05:38.174257Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.52199,"percentile":0.98899,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":22,"affectedPackages":[],"fix":{"url":"https://github.com/torvalds/linux/commit/6994eefb0053799d2e07cd140df6c2ea106c41ee","label":"torvalds/linux@6994eef"},"references":[{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-13272"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OGRK5LYWBJ4E4SRI4DKX367NHYSI3VOH/"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20190806-0001/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2019/dsa-4484"},{"type":"ADVISORY","url":"http://packetstormsecurity.com/files/153663/Linux-PTRACE_TRACEME-Broken-Permission-Object-Lifetime-Handling.html"},{"type":"ADVISORY","url":"http://packetstormsecurity.com/files/153702/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html"},{"type":"ADVISORY","url":"https://support.f5.com/csp/article/K91025336?utm_source=f5support&amp%3Butm_medium=RSS"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:2809"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4095-1/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4117-1/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4094-1/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:2411"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2019/07/msg00022.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2019/07/msg00023.html"},{"type":"ADVISORY","url":"https://support.f5.com/csp/article/K91025336"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4093-1/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:2405"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4118-1/"},{"type":"REPORT","url":"https://seclists.org/bugtraq/2019/Jul/30"},{"type":"REPORT","url":"https://seclists.org/bugtraq/2019/Jul/33"},{"type":"FIX","url":"https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6994eefb0053799d2e07cd140df6c2ea106c41ee"},{"type":"FIX","url":"https://bugs.chromium.org/p/project-zero/issues/detail?id=1903"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1730895"},{"type":"FIX","url":"https://bugzilla.suse.com/show_bug.cgi?id=1140671"},{"type":"FIX","url":"https://github.com/torvalds/linux/commit/6994eefb0053799d2e07cd140df6c2ea106c41ee"},{"type":"FIX","url":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.17"},{"type":"EVIDENCE","url":"http://packetstormsecurity.com/files/154245/Kernel-Live-Patch-Security-Notice-LSN-0054-1.html"},{"type":"EVIDENCE","url":"http://packetstormsecurity.com/files/154957/Linux-Polkit-pkexec-Helper-PTRACE_TRACEME-Local-Root.html"},{"type":"EVIDENCE","url":"http://packetstormsecurity.com/files/156929/Linux-PTRACE_TRACEME-Local-Root.html"},{"type":"EVIDENCE","url":"http://packetstormsecurity.com/files/165051/Linux-Kernel-5.1.x-PTRACE_TRACEME-pkexec-Local-Privilege-Escalation.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-04-11T08:05:38.174257Z"}}