CVE-2021-47520
High
Description
In the Linux kernel, the following vulnerability has been resolved: can: pch_can: pch_can_rx_normal: fix use after free After calling netif_receive_skb(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is dereferenced just after the call netif_receive_skb(skb). Reordering the lines solves the issue.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Linux Kernel
PublishedMay 24, 2024
First seenMay 24, 2024
How to fix
Update
- linux linux_kernel4.4.295, 4.9.293, 4.14.258, 4.19.221, 5.4.165, 5.10.85, 5.15.8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 2.6.37 ≤ v < 4.4.295, 4.5 ≤ v < 4.9.293, 4.10 ≤ v < 4.14.258, 4.15 ≤ v < 4.19.221, 4.20 ≤ v < 5.4.165, 5.5 ≤ v < 5.10.85, 5.11 ≤ v < 5.15.8 | 4.4.295, 4.9.293, 4.14.258, 4.19.221, 5.4.165, 5.10.85, 5.15.8 |
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