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Review reviewHigh

CVE-2023-53432

Linux Linux, linux kernel

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.

CVSS
7.8
EPSS
0.19%
9.00% percentile
CISA KEV
Not listed
Published
2025.09.19
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.19%
Technical severityCVSS 7.8

Vulnerability overview

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 product and versions

Product
Linux Linux, linux kernel
Affected versions
>= c76acec6d55107b652a37c90b36c00bc8b04dabb < 2ea70379e4f4efa95c9daa7f3f9bdd4d40aec927, >= c76acec6d55107b652a37c90b36c00bc8b04dabb < 9040adc38cf6bfbb77034d558ac2c52f70d840ac, >= c76acec6d55107b652a37c90b36c00bc8b04dabb < 9860921ab4521252dc39bb21b9c936bd09a00982, >= c76acec6d55107b652a37c90b36c00bc8b04dabb < 3ff256751a2853e1ffaa36958ff933ccc98c6cb5, >= 2.6.31, < 5.15.128, >= 5.16 < 6.1.47, >= 6.2 < 6.4.12
Fixed versions
5.15.128, 6.1.47, 6.4.12

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416