Tracker / CVE-2021-33200
CVE-2021-33200
High 7.8
kernel/bpf/verifier.c in the Linux kernel through 5.12.7 enforces incorrect limits for pointer arithmetic operations, aka CID-bb01a1bba579. This can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation to root. In particular, there is a corner case where the off reg causes a masking direction change, which then results in an incorrect final aux->alu_limit.
Affected products and versions
| fedoraproject | fedora |
|---|---|
| linux | linux_kernel · 5.10.33 → 5.10.41 |
| linux | linux_kernel · 5.11.17 → 5.12.8 |
| linux | linux_kernel · 5.4.116 → 5.4.123 |
| netapp | cloud_backup |
| netapp | h300e_firmware |
| netapp | h300s_firmware |
| netapp | h410s_firmware |
| netapp | h500e_firmware |
| netapp | h500s_firmware |
| netapp | h700e_firmware |
| netapp | h700s_firmware |
| 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.