Vulnerability in Linux Kernel
CVE-2019-3901
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (27.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Linux Kernel
- NetApp Active Iq Unified Manager For VMware Vsphere
- NetApp Cn1610
- NetApp Cn1610 Firmware
- NetApp Hci Management Node
- NetApp Snapprotect
- NetApp Solidfire
- NetApp Storage Replication Adapter For Clustered Data Ontap VMware Vsphere
- NetApp Vasa Provider For Clustered Data Ontap
- NetApp Virtual Storage Console For VMware Vsphere
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/89937 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.debian.org/debian-lts-announce/2019/05/msg00041.html (mailing-list, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2019/05/msg00042.html (mailing-list, Mailing List, Third Party Advisory)
- security.netapp.com/advisory/ntap-20190517-0005/ (Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2019-3901?
- CVE-2019-3901 is a medium-severity vulnerability in Linux Kernel, classified under Improper Locking. CVSS score: 4.7/10. Published 2019-04-22.
- How severe is CVE-2019-3901?
- Medium severity. CVSS v3 base score is 4.7 out of 10.
- Is CVE-2019-3901 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.