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.
References8
- git.kernel.org/stable/c/025419f4e216a3ae0d0cec622262e98e8078c447
- git.kernel.org/stable/c/1014b83778c8677f1d7a57c26dc728baa801ac62
- git.kernel.org/stable/c/2f3119686ef50319490ccaec81a575973da98815
- git.kernel.org/stable/c/7f702f85df0266ed7b5bab81ba50394c92f3c928
- git.kernel.org/stable/c/badbd79313e6591616c1b78e29a9b71efed7f035
- git.kernel.org/stable/c/c21f45cfa4a9526b34d76b397c9ef080668b6e73
- git.kernel.org/stable/c/d0e8f1445c19b1786759ba72a38267e1449bab7e
- git.kernel.org/stable/c/dbceedc0213e75bf3e9f9f9e2f66b10699d004fe
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 1% percentile: 51 · as of 10 November 2026
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.