CVE-2025-40187
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-11-12

Last updated on: 2025-11-14

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: net/sctp: fix a null dereference in sctp_disposition sctp_sf_do_5_1D_ce() If new_asoc->peer.adaptation_ind=0 and sctp_ulpevent_make_authkey=0 and sctp_ulpevent_make_authkey() returns 0, then the variable ai_ev remains zero and the zero will be dereferenced in the sctp_ulpevent_free() function.
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Meta Information
Published
2025-11-12
Last Modified
2025-11-14
Generated
2026-06-16
AI Q&A
2025-11-13
EPSS Evaluated
2026-06-15
NVD
CVE-2025-40187
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is a null pointer dereference in the Linux kernel's SCTP (Stream Control Transmission Protocol) implementation. Specifically, under certain conditions involving the peer adaptation indicator and the return value of the sctp_ulpevent_make_authkey() function, a variable remains zero and is later dereferenced, which can cause a kernel crash or instability.

Impact Analysis

The impact of this vulnerability could be a denial of service due to a kernel crash or instability when the null pointer is dereferenced. This could disrupt network communications or system availability on affected Linux systems using SCTP.

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