Tracker / CVE-2021-47301
CVE-2021-47301
High 7.8
In the Linux kernel, the following vulnerability has been resolved: igb: Fix use-after-free error during reset Cleans the next descriptor to watch (next_to_watch) when cleaning the TX ring. Failure to do so can cause invalid memory accesses. If igb_poll() runs while the controller is reset this can lead to the driver try to free a skb that was already freed. (The crash is harder to reproduce with the igb driver, but the same potential problem exists as the code is identical to igc)
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 4.12 → 4.14.241 |
| linux | linux_kernel · 4.15 → 4.19.199 |
| linux | linux_kernel · 4.20 → 5.4.136 |
| linux | linux_kernel · 5.11 → 5.13.6 |
| linux | linux_kernel · 5.5 → 5.10.54 |
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.