CVE-2025-40187net/sctp: fix a null dereference in sctp_disposition sctp_sf_do_5_1D_ce()
- 7.5HighCVSS base score
- 0.64%Exploitation in 30 daysEPSS · top 49% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 7 months later
· 7 months later
Published
- 11 months later
· 11 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Deferred | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.64% · top 49% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
- affected 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b – < 1014b83778c8677f1d7a57c26dc728baa801ac62
- affected 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b – < 7f702f85df0266ed7b5bab81ba50394c92f3c928
- affected 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b – < dbceedc0213e75bf3e9f9f9e2f66b10699d004fe
- affected 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b – < 025419f4e216a3ae0d0cec622262e98e8078c447
- affected 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b – < c21f45cfa4a9526b34d76b397c9ef080668b6e73
- affected 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b – < d0e8f1445c19b1786759ba72a38267e1449bab7e
- affected 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b – < badbd79313e6591616c1b78e29a9b71efed7f035
- affected 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b – < 2f3119686ef50319490ccaec81a575973da98815
- affected 4.17
- unaffected < 4.17
- unaffected 5.4.301 – ≤ 5.4.*
- unaffected 5.10.246 – ≤ 5.10.*
- unaffected 5.15.195 – ≤ 5.15.*
- unaffected 6.1.157 – ≤ 6.1.*
- unaffected 6.6.113 – ≤ 6.6.*
- unaffected 6.12.54 – ≤ 6.12.*
- unaffected 6.17.4 – ≤ 6.17.*
- unaffected 6.18 – ≤ *
References
References8
- https://git.kernel.org/stable/c/1014b83778c8677f1d7a57c26dc728baa801ac62 (opens in a new tab)
- https://git.kernel.org/stable/c/7f702f85df0266ed7b5bab81ba50394c92f3c928 (opens in a new tab)
- https://git.kernel.org/stable/c/dbceedc0213e75bf3e9f9f9e2f66b10699d004fe (opens in a new tab)
- https://git.kernel.org/stable/c/025419f4e216a3ae0d0cec622262e98e8078c447 (opens in a new tab)
- https://git.kernel.org/stable/c/c21f45cfa4a9526b34d76b397c9ef080668b6e73 (opens in a new tab)
- https://git.kernel.org/stable/c/d0e8f1445c19b1786759ba72a38267e1449bab7e (opens in a new tab)
- https://git.kernel.org/stable/c/badbd79313e6591616c1b78e29a9b71efed7f035 (opens in a new tab)
- https://git.kernel.org/stable/c/2f3119686ef50319490ccaec81a575973da98815 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-150387 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-40187)Record last updated .