CVE-2025-23096

Local privilege escalation via dangling IMB buffer pointer

Published Jun 4, 2025 · Updated Jun 4, 2025

Double free in the Samsung Exynos NPU driver allows local users to escalate privileges on Exynos 1280, 1380, 1480, 2200, and 2400. The __prepare_IMB_info function stores an IMB buffer pointer in the session, frees the buffer on an oversized-allocation error path, and leaves the pointer for __release_imb_mem_buf to free again. The attacker needs local low-privilege access in the untrusted_app SELinux context; successful exploitation grants elevated privileges.

CVSS severity7.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Double free in the Samsung Exynos NPU driver allows local users to escalate privileges on Exynos 1280, 1380, 1480, 2200, and 2400. The __prepare_IMB_info function stores an IMB buffer pointer in the session, frees the buffer on an oversized-allocation error path, and leaves the pointer for __release_imb_mem_buf to free again. The attacker needs local low-privilege access in the untrusted_app SELinux context; successful exploitation grants elevated privileges.

The record

CVE
CVE-2025-23096
Published
Jun 4, 2025
Updated
Jun 4, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-415, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8STAR LabsCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-415Double Free
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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