What’s Vulnerable › Vulnerabilities

CVE-2023-53432: firewire: net: fix use after free in fwnet_finish_incoming_packet()

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-18 · updated 2026-08-04
• Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: firewire: net: fix use after free in fwnet_finish_incoming_packet() The netif_rx() function frees the skb so we can't dereference it to save the skb->len.

Affected products

• Linux kernel: before 5.15.128; from 5.16 before 6.1.47; from 6.2 before 6.4.12 — fixed in 5.15.128, 6.1.47, 6.4.12

How to fix

Upgrade to a fixed version: Linux kernel 5.15.128, 6.1.47, 6.4.12. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/2ea70379e4f4efa95c9daa7f3f9bdd4d40aec927
• https://git.kernel.org/stable/c/3ff256751a2853e1ffaa36958ff933ccc98c6cb5
• https://git.kernel.org/stable/c/9040adc38cf6bfbb77034d558ac2c52f70d840ac
• https://git.kernel.org/stable/c/9860921ab4521252dc39bb21b9c936bd09a00982

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