PT-2025-44394 · Linux+4 · Linux Kernel+4

Published 2025-10-09 · Updated 2026-05-07 · CVE-2025-40104

Positive Technologies (AI Summary)

CVSS v2.0

4.4

Medium

Base vector

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

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

Description The Linux kernel’s ixgbevf driver had an issue with mailbox API compatibility. The driver experienced discrepancies due to the introduction of features specific to certain drivers (like IPSec and ESX mailbox enhancements) without proper support negotiation. This led to crashes and regressions in functionality, such as IPsec support and ESX mailbox communication. A fix was implemented to add a new mailbox operation to negotiate supported features with the PF driver, ensuring compatibility and allowing for future feature extensions.

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

Exploit

Improper Resource Release

Weakness Enumeration

CWE-404

Related Identifiers

AZL-69400

BDU:2026-02780

CVE-2025-40104

DLA-4379-1

DSA-6053-1

ECHO-FCAD-3928-9F92

MGASA-2025-0309

MGASA-2025-0310

OPENSUSE-SU-2025:15702-1

OPENSUSE-SU-2025:20091-1

OPENSUSE-SU-2026:10301-1

SUSE-SU-2025:21080-1

SUSE-SU-2025:21147-1

SUSE-SU-2025:21180-1

SUSE-SU-2025:4057-1

SUSE-SU-2025:4132-1

SUSE-SU-2025:4141-1

USN-8029-1

USN-8029-2

USN-8029-3

USN-8030-1

USN-8048-1

USN-8095-1

USN-8095-2

USN-8095-3

USN-8095-4

USN-8095-5

USN-8100-1

USN-8125-1

USN-8126-1

USN-8165-1

USN-8261-1

Affected Products

Debian

Linuxmint

Linux Kernel

Suse

Ubuntu

References · 2771

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40104.json · Exploit
• https://ubuntu.com/security/CVE-2025-38055 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40092 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21833 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-39788 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38251 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38543 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8030-1 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2025-0309.html · Security Note
• https://ubuntu.com/security/CVE-2025-40284 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40307 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37844 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-40104 · Security Note
• https://ubuntu.com/security/CVE-2025-68264 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38677 · Vendor Advisory