Tracker / CVE-2021-33909
CVE-2021-33909
High 7.8
fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.
Affected products and versions
| debian | debian_linux |
|---|---|
| fedoraproject | fedora |
| linux | linux_kernel · 3.12.43 → 3.13 |
| linux | linux_kernel · 3.16 → 4.4.276 |
| linux | linux_kernel · 4.10 → 4.14.240 |
| linux | linux_kernel · 4.15 → 4.19.198 |
| linux | linux_kernel · 4.20 → 5.4.134 |
| linux | linux_kernel · 4.5 → 4.9.276 |
| linux | linux_kernel · 5.11 → 5.12.19 |
| linux | linux_kernel · 5.13 → 5.13.4 |
| linux | linux_kernel · 5.5 → 5.10.52 |
| netapp | hci_management_node |
| netapp | solidfire |
| oracle | communications_session_border_controller |
| sonicwall | sma1000_firmware · … → 12.4.2-02044 |
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.