CVE-2021-47670
High
Description
In the Linux kernel, the following vulnerability has been resolved: can: peak_usb: fix use after free bugs After calling peak_usb_netif_rx_ni(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is accessed after the peak_usb_netif_rx_ni(). Reordering the lines solves the issue.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Linux Kernel
PublishedApr 17, 2025
First seenApr 17, 2025
Weakness typeCWE-416Use after free
How to fix
Update
- linux linux_kernel4.19.171, 5.4.93, 5.10.11 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.0 ≤ v < 4.19.171, 4.20 ≤ v < 5.4.93, 5.5 ≤ v < 5.10.11, 5.11 | 4.19.171, 5.4.93, 5.10.11 |
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