01 Record

CVE-2025-40248

vsock: Ignore signal/timeout on connect() if already established

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

vsock: Ignore signal/timeout on connect() if already established

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

0.16% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 5.2% 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

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

2025-12-04 16:08Z9 MO AGO

Last updated

2026-08-05 12:08Z1 MO 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-364Signal Handler Race ConditionBase

Data version

5.2

Document digest

288fb2e9f18eb1c053eba436a948527b08acf2f9c1ae5eaf5c6f94f82d9ef7ed

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxd021c344051af91f42c5ba9fdedc176740cbd238 to < 3f71753935d648082a8279a97d30efe6b85be680, d021c344051af91f42c5ba9fdedc176740cbd238 to < da664101fb4a0de5cb70d2bae6a650df954df2af, d021c344051af91f42c5ba9fdedc176740cbd238 to < 67432915145848658149683101104e32f9fd6559, d021c344051af91f42c5ba9fdedc176740cbd238 to < eeca93f06df89be5a36305b7b9dae1ed65550dfc, d021c344051af91f42c5ba9fdedc176740cbd238 to < 5998da5a8208ae9ad7838ba322bccb2bdcd95e81, d021c344051af91f42c5ba9fdedc176740cbd238 to < f1c170cae285e4b8f61be043bb17addc3d0a14b5, d021c344051af91f42c5ba9fdedc176740cbd238 to < ab6b19f690d89ae4709fba73a3c4a7911f495b7a, d021c344051af91f42c5ba9fdedc176740cbd238 to < 002541ef650b742a198e4be363881439bb9d86b4, 3.9—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/3f71753935d648082a8279a97d30efe6b85be680
git.kernel.orghttps://git.kernel.org/stable/c/da664101fb4a0de5cb70d2bae6a650df954df2af
git.kernel.orghttps://git.kernel.org/stable/c/67432915145848658149683101104e32f9fd6559
git.kernel.orghttps://git.kernel.org/stable/c/eeca93f06df89be5a36305b7b9dae1ed65550dfc
git.kernel.orghttps://git.kernel.org/stable/c/5998da5a8208ae9ad7838ba322bccb2bdcd95e81
git.kernel.orghttps://git.kernel.org/stable/c/f1c170cae285e4b8f61be043bb17addc3d0a14b5
git.kernel.orghttps://git.kernel.org/stable/c/ab6b19f690d89ae4709fba73a3c4a7911f495b7a
git.kernel.orghttps://git.kernel.org/stable/c/002541ef650b742a198e4be363881439bb9d86b4
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-253495.html

01 Record index

CVE-2025-40248

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2025-40248

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References