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Unrated severityNVD Advisory· Published Oct 15, 2025· Updated Apr 15, 2026

CVE-2025-39978

CVE-2025-39978

Description

In the Linux kernel, the following vulnerability has been resolved:

octeontx2-pf: Fix potential use after free in otx2_tc_add_flow()

This code calls kfree_rcu(new_node, rcu) and then dereferences "new_node" and then dereferences it on the next line. Two lines later, we take a mutex so I don't think this is an RCU safe region. Re-order it to do the dereferences before queuing up the free.

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Affected products

196

Patches

Vulnerability mechanics

References

5

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