Tracker / CVE-2021-47055
CVE-2021-47055
High 7.1
In the Linux kernel, the following vulnerability has been resolved: mtd: require write permissions for locking and badblock ioctls MEMLOCK, MEMUNLOCK and OTPLOCK modify protection bits. Thus require write permission. Depending on the hardware MEMLOCK might even be write-once, e.g. for SPI-NOR flashes with their WP# tied to GND. OTPLOCK is always write-once. MEMSETBADBLOCK modifies the bad block table.
Affected products and versions
| linux | linux_kernel · 4.14.194 → 4.14.233 |
|---|---|
| linux | linux_kernel · 4.19.139 → 4.19.191 |
| linux | linux_kernel · 4.4.233 → 4.4.269 |
| linux | linux_kernel · 4.9.233 → 4.9.269 |
| linux | linux_kernel · 5.11 → 5.11.21 |
| linux | linux_kernel · 5.12 → 5.12.4 |
| linux | linux_kernel · 5.4.58 → 5.4.119 |
| linux | linux_kernel · 5.9 → 5.10.37 |
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.