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CVE-2019-3901

MEDIUM
Published 2019-04-22T15:22:15
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CVSS Score

V3.0
5.6
/10
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.001
probability
of exploitation in the wild

There is a 0.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.227
Higher than 22.7% of all CVEs

Attack Vector Metrics

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
NONE
Availability
NONE

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

The Linux Foundation

kernel

Affected Versions:

older then 4.8

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-7w4w-2hxm-8cc6

Advisory Details

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.

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2019-3901
WEB https://access.redhat.com/errata/RHSA-2020:1016
WEB https://access.redhat.com/errata/RHSA-2020:1070
WEB https://access.redhat.com/errata/RHSA-2020:2522
WEB https://access.redhat.com/errata/RHSA-2020:2851
WEB https://access.redhat.com/security/cve/CVE-2019-3901
WEB https://bugzilla.redhat.com/show_bug.cgi?id=1701245
WEB https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3901
WEB https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html
WEB https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html
WEB https://security.netapp.com/advisory/ntap-20190517-0005
WEB http://www.securityfocus.com/bid/89937

Advisory provided by GitHub Security Advisory Database. Published: May 24, 2022, Modified: December 1, 2022

References

http://www.securityfocus.com/bid/89937
https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html
https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html
https://security.netapp.com/advisory/ntap-20190517-0005/
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3901
Published: 2019-04-22T15:22:15
Last Modified: 2024-08-04T19:26:26.688Z
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