CVE-2025-39946

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.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total 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

9.57% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 95.1% 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

Analyzed. NVD last modified this record on 2026-06-17.

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

2026-08-05 12:06Z1 MO AGO

Reserved

2025-04-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

2958ddc98db051fb5e39f93e01217739cdd2f2b373f8f729b4e95ec284ceb09b

• git.kernel.orghttps://git.kernel.org/stable/c/b36462146d86b1f22e594fe4dae611dffacfb203
• git.kernel.orghttps://git.kernel.org/stable/c/4cefe5be73886f383639fe0850bb72d5b568a7b9
• git.kernel.orghttps://git.kernel.org/stable/c/208640e6225cc929a05adbf79d1df558add3e231
• git.kernel.orghttps://git.kernel.org/stable/c/61ca2da5fb8f433ce8bbd1657c84a86272133e6b
• git.kernel.orghttps://git.kernel.org/stable/c/0aeb54ac4cd5cf8f60131b4d9ec0b6dc9c27b20d