CVE-2023-53432
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-18

Last updated on: 2025-12-11

Assigner: kernel.org

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.
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Meta Information
Published
2025-09-18
Last Modified
2025-12-11
Generated
2026-06-16
AI Q&A
2025-09-18
EPSS Evaluated
2026-06-15
NVD
CVE-2023-53432
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
linux linux_kernel to 5.15.128 (exc)
linux linux_kernel From 5.16 (inc) to 6.1.47 (exc)
linux linux_kernel From 6.2 (inc) to 6.4.12 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
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Executive Summary

This vulnerability is a use-after-free issue in the Linux kernel's FireWire networking code, specifically in the function fwnet_finish_incoming_packet(). The problem occurs because the netif_rx() function frees a network buffer (skb), but the code attempts to access the freed buffer's length afterwards, which can lead to undefined behavior or crashes.

Impact Analysis

The use-after-free vulnerability can cause system instability, crashes, or potentially allow an attacker to execute arbitrary code or cause denial of service by exploiting the improper handling of network packets in the FireWire networking subsystem.

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