CVE-2023-53556

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 3.7% 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

2025-10-04 15:17Z11 MO AGO

Last updated

2026-08-05 09:14Z1 MO AGO

Reserved

2025-10-04

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-416Use After FreeVariant
• CWE-664Improper Control of a Resource Through its LifetimePillar

Data version

5.2

Document digest

e5d70bbce8715c459312caa53d9a579680494cd4d2cc276b258067e55b343bbb

• git.kernel.orghttps://git.kernel.org/stable/c/17046107ca15d7571551539d94e76aba2bf71fd3
• git.kernel.orghttps://git.kernel.org/stable/c/a4635f190f332304db4a49e827ece790b804b5db
• git.kernel.orghttps://git.kernel.org/stable/c/345c44e18cc10cded85cb9134830e1684495c866
• git.kernel.orghttps://git.kernel.org/stable/c/ca12b98e04b5d1902ac08fe826d3500cb4b6e891
• git.kernel.orghttps://git.kernel.org/stable/c/8d781a9c53034813c3194b7d94409c7d24ac73eb
• git.kernel.orghttps://git.kernel.org/stable/c/5f4fa1672d98fe99d2297b03add35346f1685d6b