CVE-2023-53640

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

0.19% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 9.4% 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

Modified. NVD last modified this record on 2026-08-04.

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

2025-10-07 15:19Z11 MO AGO

Last updated

2026-08-05 09:15Z1 MO AGO

Reserved

2025-10-07

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.3)

CNA CVSS vector

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

Weaknesses

• CWE-416Use After FreeVariant
• CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

565b49ec57651bc9e594fd9c35541a9219104bbd8a2aecf288c4559eb1589247

• git.kernel.orghttps://git.kernel.org/stable/c/8f1512d78b5de928f4616a871e77b58fd546e651
• git.kernel.orghttps://git.kernel.org/stable/c/8d81d3b0ed3610d24191d24f8e9e20f6775f0cc5
• git.kernel.orghttps://git.kernel.org/stable/c/f5e61e3fe799ba2fda4320af23d26d28c3302045
• git.kernel.orghttps://git.kernel.org/stable/c/75e5fab7db0cecb6e16b22c34608f0b40a4c7cd1