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.
No analysis available yet.
Remediation
No remediation available yet.
Tracking
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Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-1799-1 | linux security update |
Debian DLA |
DLA-1799-2 | linux security update |
EUVD |
EUVD-2019-13509 | 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
History
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2024-08-04T19:26:26.688Z
Reserved: 2019-01-03T00:00:00.000Z
Link: CVE-2019-3901
No data.
Status : Modified
Published: 2019-04-22T16:29:01.850
Modified: 2024-11-21T04:42:49.780
Link: CVE-2019-3901
OpenCVE Enrichment
No data.
Weaknesses
Debian DLA
EUVD