CVE-2025-40187

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.

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.6% chance of exploitation in the next 30 days; higher than 50% of CVEs (scores of 2026-10-25)

Published

2025-11-12

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

References

• https://git.kernel.org/stable/c/025419f4e216a3ae0d0cec622262e98e8078c447
• https://git.kernel.org/stable/c/1014b83778c8677f1d7a57c26dc728baa801ac62
• https://git.kernel.org/stable/c/2f3119686ef50319490ccaec81a575973da98815
• https://git.kernel.org/stable/c/7f702f85df0266ed7b5bab81ba50394c92f3c928
• https://git.kernel.org/stable/c/badbd79313e6591616c1b78e29a9b71efed7f035

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