CVE-2025-39872
High
Description
In the Linux kernel, the following vulnerability has been resolved: hsr: hold rcu and dev lock for hsr_get_port_ndev hsr_get_port_ndev calls hsr_for_each_port, which need to hold rcu lock. On the other hand, before return the port device, we need to hold the device reference to avoid UaF in the caller function.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedSep 23, 2025
First seenSep 23, 2025
How to fix
Update
- linux linux_kernel6.16.8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.14 ≤ v < 6.16.8, 6.17 | 6.16.8 |
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