CVE-2025-39953

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

0.15% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 4.5% of scored records. A rank, not a probability.

NVD base score

5.5 (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:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-07-14.

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.

Published

2025-10-04 07:31Z11 MO AGO

Last updated

2026-07-14 12:43Z1 MO AGO

Reserved

2025-04-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-821Incorrect SynchronizationBase

Data version

5.2

Document digest

303514fc2fcd68ca807df8b702769dd6518e611ab1e48d72bb163cb490a14fe8

• git.kernel.orghttps://git.kernel.org/stable/c/cabadd7fd15f97090f752fd22dd7f876a0dc3dc4
• git.kernel.orghttps://git.kernel.org/stable/c/a0c896bda7077aa5005473e2c5b3c27173313b4c
• git.kernel.orghttps://git.kernel.org/stable/c/f2795d1b92506e3adf52a298f7181032a1525e04
• git.kernel.orghttps://git.kernel.org/stable/c/993049c9b1355c78918344a6403427d53f9ee700
• git.kernel.orghttps://git.kernel.org/stable/c/4a1e3ec28e8062cd9f339aa6a942df9c5bcb6811
• git.kernel.orghttps://git.kernel.org/stable/c/ded4d207a3209a834b6831ceec7f39b934c74802
• git.kernel.orghttps://git.kernel.org/stable/c/05e0b03447cf215ec384210441b34b7a3b16e8b0
• git.kernel.orghttps://git.kernel.org/stable/c/79f919a89c9d06816dbdbbd168fa41d27411a7f9
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-019113.html