01 Record

CVE-2025-40186

tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request().

HighPUBLISHEDCNA: Linux

CNA base score8.1 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request().

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.54% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 43.3% of scored records. A rank, not a probability.
NVD base score: 8.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/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: Important. 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 21:56Z9 MO AGO

Last updated

2026-08-05 12:08Z1 MO AGO

Reserved

2025-04-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.1)

CNA CVSS vector

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

Weaknesses

CWE-826Premature Release of Resource During Expected LifetimeBase

Data version

5.2

Document digest

c805fad797095b2465acb1cfad14b868cc22e603de01a4b7ab33baf54de1bfbb

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux7ec092a91ff351dcde89c23e795b73a328274db6 to < e359b742eac1eac75cff4e38ee2e8cea492acd9b, a4378dedd6e07e62f2fccb17d78c9665718763d0 to < ff6a8883f96a5bc74241ce5b3d431a6dcfa2124d, 33a4fdf0b4a25f8ce65380c3b0136b407ca57609 to < eb85ad5f23268d64b037bfb545cbcba3752f90c7, 17d699727577814198d744d6afe54735c6b54c99 to < 643a94b0cf767325e953591c212be2eb826b9d7f, dfd06131107e7b699ef1e2a24ed2f7d17c917753 to < 422c1c173c39bbbae1e0eaaf8aefe40b2596233b, fa4749c065644af4db496b338452a69a3e5147d9 to < c11ace909e873118295e9eb22dc8c58b0b50eb32, 45c8a6cc2bcd780e634a6ba8e46bffbdf1fc5c01 to < 64dc47a13aa3d9daf7cec29b44dca8e22a6aea15, 45c8a6cc2bcd780e634a6ba8e46bffbdf1fc5c01 to < 2e7cbbbe3d61c63606994b7ff73c72537afe2e1c, ae313d14b45eca7a6bb29cb9bf396d977e7d28fb, 5.4.300 to < 5.4.301, 5.10.245 to < 5.10.246, 5.15.194 to < 5.15.195, 6.1.154 to < 6.1.157, 6.6.108 to < 6.6.113, 6.12.49 to < 6.12.54, 6.16.9 to < 6.17, 6.17—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/e359b742eac1eac75cff4e38ee2e8cea492acd9b
git.kernel.orghttps://git.kernel.org/stable/c/ff6a8883f96a5bc74241ce5b3d431a6dcfa2124d
git.kernel.orghttps://git.kernel.org/stable/c/eb85ad5f23268d64b037bfb545cbcba3752f90c7
git.kernel.orghttps://git.kernel.org/stable/c/643a94b0cf767325e953591c212be2eb826b9d7f
git.kernel.orghttps://git.kernel.org/stable/c/422c1c173c39bbbae1e0eaaf8aefe40b2596233b
git.kernel.orghttps://git.kernel.org/stable/c/c11ace909e873118295e9eb22dc8c58b0b50eb32
git.kernel.orghttps://git.kernel.org/stable/c/64dc47a13aa3d9daf7cec29b44dca8e22a6aea15
git.kernel.orghttps://git.kernel.org/stable/c/2e7cbbbe3d61c63606994b7ff73c72537afe2e1c

01 Record index

CVE-2025-40186

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2025-40186

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References