Tracker / CVE-2021-47401
CVE-2021-47401
High 7.1
In the Linux kernel, the following vulnerability has been resolved: ipack: ipoctal: fix stack information leak The tty driver name is used also after registering the driver and must specifically not be allocated on the stack to avoid leaking information to user space (or triggering an oops). Drivers should not try to encode topology information in the tty device name but this one snuck in through staging without anyone noticing and another driver has since copied this malpractice. Fixing the ABI is a separate issue, but this at least plugs the security hole.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 3.5 → 4.4.286 |
| linux | linux_kernel · 4.10 → 4.14.249 |
| linux | linux_kernel · 4.15 → 4.19.209 |
| linux | linux_kernel · 4.20 → 5.4.151 |
| linux | linux_kernel · 4.5 → 4.9.285 |
| linux | linux_kernel · 5.11 → 5.14.10 |
| linux | linux_kernel · 5.5 → 5.10.71 |
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.