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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Centos_linux | — | Upgrade kernel-rtUpgrade kernel | Apr 1, 2020 | Apr 22, 2019 |
| Debian | — | Upgrade linux | May 29, 2019 | Apr 22, 2019 |
| Huawei Euleros 2_0_sp2 | — | Upgrade kernel-tools-libsUpgrade kernel-debugUpgrade kernel-develUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-headersUpgrade kernel-debuginfoUpgrade kernel-debug-develUpgrade perfUpgrade python-perfUpgrade kernel-toolsUpgrade kernel | Jun 27, 2019 | Apr 22, 2019 |
| Huawei Euleros 2_0_sp3 | — | Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfoUpgrade kernel-tools-libsUpgrade kernel-headersUpgrade kernelUpgrade python-perfUpgrade kernel-toolsUpgrade perfUpgrade kernel-devel | Jun 27, 2019 | Apr 22, 2019 |
| Huawei Euleros 2_0_sp5 | — | Upgrade kernel-develUpgrade perfUpgrade kernel-tools-libsUpgrade kernelUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-headersUpgrade python-perfUpgrade kernel-tools | May 30, 2019 | Apr 22, 2019 |
| Oracle_linux | — | Upgrade kernelUpgrade kernel-uek | Apr 9, 2020 | Apr 25, 2016 |
| Redhat_linux | — | Upgrade kernelNo solution existsUpgrade kernel-rt | Apr 1, 2020 | Apr 22, 2019 |
| Ubuntu | — | Upgrade linuxUpgrade linux-lts-xenialUpgrade linux-snapdragonUpgrade linux-raspi2 | Nov 19, 2024 | Apr 22, 2019 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Apr 22, 2019 |
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