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.
- Score
- CVSS 3.0 5.6 Medium
- Status
- Modified - secalert@redhat.com
- Published
- 2019-04-22
- Last modified
- 2024-08-04
- Weaknesses
- CWE-667
Affected products
- Debian Linux (Debian)
- Linux Kernel (Linux)
- Active Iq Unified Manager For Vmware Vsphere (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 (Netapp)
- Kernel (The Linux Foundation)
References
- http://www.securityfocus.com/bid/89937
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3901
- 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/
