01 Record

CVE-2025-40331

sctp: Prevent TOCTOU out-of-bounds write

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

sctp: Prevent TOCTOU out-of-bounds write

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.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
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

0.18% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 8.2% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-07-30.

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

2025-12-09 04:09Z8 MO AGO

Last updated

2026-08-05 12:09Z29 DAYS AGO

Reserved

2025-04-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

CWE-367Time-of-check Time-of-use (TOCTOU) Race ConditionBase

Data version

5.2

Document digest

a5971c8368e49972a36f83cec6a1db3868ab5a346f72cb1065eaa5af7abe593d

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux8f840e47f190cbe61a96945c13e9551048d42cef to < b106a68df0650b694b254427cd9250c04500edd3, 8f840e47f190cbe61a96945c13e9551048d42cef to < 3006959371007fc2eae4a078f823c680fa52de1a, 8f840e47f190cbe61a96945c13e9551048d42cef to < 72e3fea68eac8d088e44c3dd954e843478e9240e, 8f840e47f190cbe61a96945c13e9551048d42cef to < 584307275b2048991b2e8984962189b6cc0a9b85, 8f840e47f190cbe61a96945c13e9551048d42cef to < c9119f243d9c0da3c3b5f577a328de3e7ffd1b42, 8f840e47f190cbe61a96945c13e9551048d42cef to < 2fe08fcaacb7eb019fa9c81db39b2214de216677, 8f840e47f190cbe61a96945c13e9551048d42cef to < 89eac1e150dbd42963e13d23828cb8c4e0763196, 8f840e47f190cbe61a96945c13e9551048d42cef to < 95aef86ab231f047bb8085c70666059b58f53c09, 4.7—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/b106a68df0650b694b254427cd9250c04500edd3
git.kernel.orghttps://git.kernel.org/stable/c/3006959371007fc2eae4a078f823c680fa52de1a
git.kernel.orghttps://git.kernel.org/stable/c/72e3fea68eac8d088e44c3dd954e843478e9240e
git.kernel.orghttps://git.kernel.org/stable/c/584307275b2048991b2e8984962189b6cc0a9b85
git.kernel.orghttps://git.kernel.org/stable/c/c9119f243d9c0da3c3b5f577a328de3e7ffd1b42
git.kernel.orghttps://git.kernel.org/stable/c/2fe08fcaacb7eb019fa9c81db39b2214de216677
git.kernel.orghttps://git.kernel.org/stable/c/89eac1e150dbd42963e13d23828cb8c4e0763196
git.kernel.orghttps://git.kernel.org/stable/c/95aef86ab231f047bb8085c70666059b58f53c09

01 Record index

CVE-2025-40331

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2025-40331

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References