CVE-2023-54085
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
24/12/2025
Last modified:
24/12/2025
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
mptcp: fix NULL pointer dereference on fastopen early fallback<br />
<br />
In case of early fallback to TCP, subflow_syn_recv_sock() deletes<br />
the subflow context before returning the newly allocated sock to<br />
the caller.<br />
<br />
The fastopen path does not cope with the above unconditionally<br />
dereferencing the subflow context.