CVE-2025-40187
net/sctp: fix a null dereference in sctp_disposition sctp_sf_do_5_1D_ce()
Vexday Risk Score
3Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
12 Nov 2025Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/025419f4e216a3ae0d0cec622262e98e8078c447https://git.kernel.org/stable/c/1014b83778c8677f1d7a57c26dc728baa801ac62https://git.kernel.org/stable/c/2f3119686ef50319490ccaec81a575973da98815https://git.kernel.org/stable/c/7f702f85df0266ed7b5bab81ba50394c92f3c928https://git.kernel.org/stable/c/badbd79313e6591616c1b78e29a9b71efed7f035https://git.kernel.org/stable/c/c21f45cfa4a9526b34d76b397c9ef080668b6e73https://git.kernel.org/stable/c/d0e8f1445c19b1786759ba72a38267e1449bab7ehttps://git.kernel.org/stable/c/dbceedc0213e75bf3e9f9f9e2f66b10699d004fe