CVE-2019-3901
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.
How to fix
- linux linux_kernel4.8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 4.8 | 4.8 |
| debian debian_linux | 8.0 | — |
| netapp active_iq_unified_manager_for_vmware_vsphere | 9.5 ≤ v | — |
| netapp hci_management_node | No range specified | — |
| netapp snapprotect | No range specified | — |
| netapp solidfire | No range specified | — |
| netapp storage_replication_adapter_for_clustered_data_ontap_for_vmware_vsphere | 7.2 ≤ v | — |
| netapp vasa_provider_for_clustered_data_ontap | 7.2 ≤ v | — |
| netapp virtual_storage_console_for_vmware_vsphere | 7.2 ≤ v | — |
| netapp cn1610_firmware | No range specified | — |
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