PT-2025-43614 · Linux+4 · Linux Kernel+4

Published 2025-10-24 · Updated 2026-05-26 · CVE-2025-40019

Positive Technologies (AI Summary)

CVSS v2.0

5.2

Medium

Base vector

AV:L/AC:L/Au:S/C:N/I:P/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The Linux kernel contains an issue within the crypto/essiv module. A missing size check (ssize) during decryption and in-place encryption could potentially lead to problems. The fix involves moving the ssize check to the beginning of the essiv aead crypt function to ensure it is performed for both decryption and in-place encryption operations.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

AZL-68766

BDU:2026-01277

CVE-2025-40019

DLA-4379-1

DLA-4404-1

DSA-6053-1

ECHO-DFE5-3CD6-4380

MGASA-2025-0309

MGASA-2025-0310

OESA-2025-2551

OESA-2025-2552

OESA-2025-2556

OESA-2025-2764

OESA-2025-2769

OPENSUSE-SU-2025:15702-1

OPENSUSE-SU-2025:20091-1

OPENSUSE-SU-2026:10301-1

SUSE-SU-2025:21040-1

SUSE-SU-2025:21052-1

SUSE-SU-2025:21056-1

SUSE-SU-2025:21064-1

SUSE-SU-2025:21080-1

SUSE-SU-2025:21147-1

SUSE-SU-2025:21180-1

SUSE-SU-2025:4057-1

SUSE-SU-2025:4128-1

SUSE-SU-2025:4132-1

SUSE-SU-2025:4140-1

SUSE-SU-2025:4141-1

SUSE-SU-2025:4301-1

SUSE-SU-2026:0263-1

SUSE-SU-2026:0317-1

SUSE-SU-2026:0350-1

SUSE-SU-2026:0369-1

SUSE-SU-2026:0411-1

SUSE-SU-2026:0617-1

USN-7990-1

USN-7990-2

USN-7990-3

USN-7990-4

USN-7990-5

USN-7990-6

USN-8013-1

USN-8013-2

USN-8013-3

USN-8013-4

USN-8014-1

USN-8015-1

USN-8015-2

USN-8015-3

USN-8015-4

USN-8015-5

USN-8016-1

USN-8052-1

USN-8074-1

USN-8074-2

USN-8126-1

USN-8224-1

Affected Products

Debian

Linuxmint

Linux Kernel

Suse

Ubuntu

References · 3487

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40019.json · Exploit
• https://ubuntu.com/security/CVE-2025-40333 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68222 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38396 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38576 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-39734 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22128 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68183 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-23157 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7990-2 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8013-4 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38217 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-39795 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-39800 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40049 · Vendor Advisory