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.
References
Link | Resource |
---|---|
http://www.securityfocus.com/bid/89937 | Third Party Advisory VDB Entry |
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3901 | Issue Tracking Patch Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html | Mailing List Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html | Mailing List Third Party Advisory |
https://security.netapp.com/advisory/ntap-20190517-0005/ | Third Party Advisory |
History
No history.
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
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
Redhat Information
No data.
CWE