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.
EPSS: 0.003 (27.2th percentile) — read the EPSS interpretation.
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.
Affected products
- Linux 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_for_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
- secalert@redhat.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory)
- secalert@redhat.com (x_refsource_CONFIRM, 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.