01 Record

CVE-2025-40187

net/sctp: fix a null dereference in sctp_disposition sctp_sf_do_5_1D_ce()

HighPUBLISHEDCNA: Linux

CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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02 Description

net/sctp: fix a null dereference in sctp_disposition sctp_sf_do_5_1D_ce()

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.63% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 50.4% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-10-19.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published: 2025-11-12 21:56Z11 MO AGO
Last updated: 2026-10-15 22:02Z13 DAYS AGO
Reserved: 2025-04-16
Assigning CNA: Linux
Record state: PUBLISHED
Severity: High (CVSS 7.5)
CNA CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses: No CWE assigned
Data version: 5.2
Document digest: 72476c694f6b6d6a17a62267c5bb70383fa548bc23057d6e5039a7b393f4c061

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b to < 1014b83778c8677f1d7a57c26dc728baa801ac62, 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b to < 7f702f85df0266ed7b5bab81ba50394c92f3c928, 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b to < dbceedc0213e75bf3e9f9f9e2f66b10699d004fe, 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b to < 025419f4e216a3ae0d0cec622262e98e8078c447, 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b to < c21f45cfa4a9526b34d76b397c9ef080668b6e73, 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b to < d0e8f1445c19b1786759ba72a38267e1449bab7e, 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b to < badbd79313e6591616c1b78e29a9b71efed7f035, 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b to < 2f3119686ef50319490ccaec81a575973da98815, 4.17—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/1014b83778c8677f1d7a57c26dc728baa801ac62
git.kernel.orghttps://git.kernel.org/stable/c/7f702f85df0266ed7b5bab81ba50394c92f3c928
git.kernel.orghttps://git.kernel.org/stable/c/dbceedc0213e75bf3e9f9f9e2f66b10699d004fe
git.kernel.orghttps://git.kernel.org/stable/c/025419f4e216a3ae0d0cec622262e98e8078c447
git.kernel.orghttps://git.kernel.org/stable/c/c21f45cfa4a9526b34d76b397c9ef080668b6e73
git.kernel.orghttps://git.kernel.org/stable/c/d0e8f1445c19b1786759ba72a38267e1449bab7e
git.kernel.orghttps://git.kernel.org/stable/c/badbd79313e6591616c1b78e29a9b71efed7f035
git.kernel.orghttps://git.kernel.org/stable/c/2f3119686ef50319490ccaec81a575973da98815

07 Fixed in

Debian 12

linux
Fixed in 6.1.158-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.12.57-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 6.17.6-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.