CVE-2025-40187net/sctp: fix a null dereference in sctp_disposition sctp_sf_do_5_1D_ce()
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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
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Deferred
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b before 1014b83778c8677f1d7a57c26dc728baa801ac62; 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b builds before 7f702f85df0266ed7b5bab81ba50394c92f3c928; from 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b before dbceedc0213e75bf3e9f9f9e2f66b10699d004fe; from 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b before 025419f4e216a3ae0d0cec622262e98e8078c447; from 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b before c21f45cfa4a9526b34d76b397c9ef080668b6e73; from 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b before d0e8f1445c19b1786759ba72a38267e1449bab7e; from 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b before badbd79313e6591616c1b78e29a9b71efed7f035; 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b builds before 2f3119686ef50319490ccaec81a575973da98815 | CNA record |
References
- https://git.kernel.org/stable/c/1014b83778c8677f1d7a57c26dc728baa801ac62
- https://git.kernel.org/stable/c/7f702f85df0266ed7b5bab81ba50394c92f3c928
- https://git.kernel.org/stable/c/dbceedc0213e75bf3e9f9f9e2f66b10699d004fe
- https://git.kernel.org/stable/c/025419f4e216a3ae0d0cec622262e98e8078c447
- https://git.kernel.org/stable/c/c21f45cfa4a9526b34d76b397c9ef080668b6e73
- https://git.kernel.org/stable/c/d0e8f1445c19b1786759ba72a38267e1449bab7e
- https://git.kernel.org/stable/c/badbd79313e6591616c1b78e29a9b71efed7f035
- https://git.kernel.org/stable/c/2f3119686ef50319490ccaec81a575973da98815
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.