NVD - CVE-2019-3901

Vulnerability Change Records for CVE-2019-3901

Change History

CVE Modified by Red Hat, Inc. 2/02/2023 4:19:18 PM

Action	Type	Old Value	New Value
Removed	CWE	Red Hat, Inc. CWE-667
Changed	Description	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.	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.
Added	Reference		https://access.redhat.com/errata/RHSA-2020:1016 [No Types Assigned]
Added	Reference		https://access.redhat.com/errata/RHSA-2020:1070 [No Types Assigned]
Added	Reference		https://access.redhat.com/errata/RHSA-2020:2522 [No Types Assigned]
Added	Reference		https://access.redhat.com/errata/RHSA-2020:2851 [No Types Assigned]
Added	Reference		https://access.redhat.com/security/cve/CVE-2019-3901 [No Types Assigned]
Added	Reference		https://bugzilla.redhat.com/show_bug.cgi?id=1701245 [No Types Assigned]