PT-2025-31087 · Linux+5 · Linux Kernel+5

Published 2025-07-14 · Updated 2026-05-26 · CVE-2025-38491

Positive Technologies (AI Summary)

CVSS v2.0

6.0

Medium

Base vector

AV:L/AC:H/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.16.0-rc3-gbd5ce2324dba

Description The Linux kernel contained a flaw in the MPTCP protocol related to the atomicity of fallback actions and decisions. A Syzkaller report indicated a potential system crash (splat) due to this issue. The vulnerability was identified during testing and has been addressed.

Recommendations Update to a newer version of the Linux kernel that contains a fix for this vulnerability.

Exploit

Fix

DoS

Improper Locking

Infinite Loop

Weakness Enumeration

CWE-667

CWE-835

Related Identifiers

AZL-65943

AZL-73461

BDU:2025-13520

CVE-2025-38491

DLA-4328-1

DSA-5975-1

DSA-6009-1

ECHO-CCA6-0AB2-8B41

OESA-2026-1566

OESA-2026-1567

OESA-2026-1570

OPENSUSE-SU-2025:20081-1

SUSE-SU-2025:03272-1

SUSE-SU-2025:03290-1

SUSE-SU-2025:03301-1

SUSE-SU-2025:03382-1

SUSE-SU-2025:03602-1

SUSE-SU-2025:03633-1

SUSE-SU-2025:03634-1

SUSE-SU-2025:20653-1

SUSE-SU-2025:20669-1

SUSE-SU-2025:20739-1

SUSE-SU-2025:20756-1

SUSE-SU-2025:21074-1

SUSE-SU-2025:21139-1

SUSE-SU-2025:21179-1

SUSE-SU-2025_03272-1

SUSE-SU-2025_03290-1

SUSE-SU-2025_03301-1

SUSE-SU-2025_03382-1

USN-7879-1

USN-7879-2

USN-7879-3

USN-7879-4

USN-7880-1

USN-7934-1

USN-8028-1

USN-8028-2

USN-8028-3

USN-8028-4

USN-8028-5

USN-8028-6

USN-8028-7

USN-8028-8

USN-8031-1

USN-8031-2

USN-8031-3

USN-8052-1

USN-8052-2

USN-8074-1

USN-8074-2

USN-8126-1

Affected Products

Debian

Linuxmint

Linux Kernel

Red Os

Suse

Ubuntu

References · 3134

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38491.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://nvd.nist.gov/vuln/detail/CVE-2026-23038 · Security Note
• https://ubuntu.com/security/CVE-2025-38642 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38217 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-39795 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-39902 · Security Note
• https://osv.dev/vulnerability/DLA-4328-1 · Vendor Advisory