CVE-2019-3901 - CVE House
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Status published Medium CVE-2019-3901

A race condition in perf_event_open() allows local attackers to leak...

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

The Linux Foundation

View all reports →

Affected Software

kernel
Vulnerable Versions:
older then 4.8

Timeline

Official Publish: April 22nd, 2019
Last Modified: August 4th, 2024
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

Weaknesses (CWE)

CWE-667

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.