A race condition in perf_event_open() allows local attackers to leak sensitive data from setuid programs. As no relevant locks (in particular the cred_guard_mutex) are held during the ptrace_may_access() call, it is possible for the specified target task to perform an execve() syscall with setuid execution before perf_event_alloc() actually attaches to it, allowing an attacker to bypass the ptrace_may_access() check and the perf_event_exit_task(current) call that is performed in install_exec_creds() during privileged execve() calls. This issue affects kernel versions before 4.8.
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cve-icon MITRE Information

Status: PUBLISHED

Assigner: redhat

Published: 2019-04-22T15:22:15

Updated: 2020-12-04T18:00:59

Reserved: 2019-01-03T00:00:00


Link: CVE-2019-3901

JSON object: View

cve-icon NVD Information

Status : Modified

Published: 2019-04-22T16:29:01.850

Modified: 2023-02-12T23:38:57.670


Link: CVE-2019-3901

JSON object: View

cve-icon Redhat Information

No data.

CWE