Tracker / CVE-2020-25221
CVE-2020-25221
High 7.8
get_gate_page in mm/gup.c in the Linux kernel 5.7.x and 5.8.x before 5.8.7 allows privilege escalation because of incorrect reference counting (caused by gate page mishandling) of the struct page that backs the vsyscall page. The result is a refcount underflow. This can be triggered by any 64-bit process that can use ptrace() or process_vm_readv(), aka CID-9fa2dd946743.
Affected products and versions
| linux | linux_kernel · 5.7.0 → 5.8.7 |
|---|---|
| netapp | cloud_backup |
| netapp | hci_compute_node |
| netapp | solidfire\,_enterprise_sds_\&_hci_storage_node |
| netapp | solidfire_\&_hci_management_node |
| netapp | solidfire_baseboard_management_controller |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.