CVE-2025-39973

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

0.14% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 4.2% of scored records. A rank, not a probability.

NVD base score

8.8 (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:C/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.

Published

2025-10-15 07:55Z10 MO AGO

Last updated

2026-08-05 12:06Z1 MO AGO

Reserved

2025-04-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-131Incorrect Calculation of Buffer SizeBase

Data version

5.2

Document digest

5248d99a1db00e8d4f612283bf521de447f3afe5e306e4f75e9353935155ba16

• git.kernel.orghttps://git.kernel.org/stable/c/0543d40d6513cdf1c7882811086e59a6455dfe97
• git.kernel.orghttps://git.kernel.org/stable/c/7d749e38dd2b7e8a80da2ca30c93e09de95bfcf9
• git.kernel.orghttps://git.kernel.org/stable/c/45a7527cd7da4cdcf3b06b5c0cb1cae30b5a5985
• git.kernel.orghttps://git.kernel.org/stable/c/d3b0d3f8d11fa957171fbb186e53998361a88d4e
• git.kernel.orghttps://git.kernel.org/stable/c/c0c83f4cd074b75cecef107bfc349be7d516c9c4
• git.kernel.orghttps://git.kernel.org/stable/c/05fe81fb9db20464fa532a3835dc8300d68a2f84
• git.kernel.orghttps://git.kernel.org/stable/c/afec12adab55d10708179a64d95d650741e60fe0
• git.kernel.orghttps://git.kernel.org/stable/c/55d225670def06b01af2e7a5e0446fbe946289e8