Tracker / CVE-2021-47236
CVE-2021-47236
Medium 5.5
In the Linux kernel, the following vulnerability has been resolved: net: cdc_eem: fix tx fixup skb leak when usbnet transmit a skb, eem fixup it in eem_tx_fixup(), if skb_copy_expand() failed, it return NULL, usbnet_start_xmit() will have no chance to free original skb. fix it by free orginal skb in eem_tx_fixup() first, then check skb clone status, if failed, return NULL to usbnet.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 2.6.30 → 4.4.274 |
| linux | linux_kernel · 4.10 → 4.14.238 |
| linux | linux_kernel · 4.15 → 4.19.196 |
| linux | linux_kernel · 4.20 → 5.4.128 |
| linux | linux_kernel · 4.5 → 4.9.274 |
| linux | linux_kernel · 5.11 → 5.12.13 |
| linux | linux_kernel · 5.5 → 5.10.46 |
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.