PT-2025-22156 · Linux+4 · Linux Kernel+4

Published 2025-05-01 · Updated 2026-04-03 · CVE-2025-37894

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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

Description A vulnerability in the Linux kernel has been resolved. The issue arises when a pointer of type struct inet timewait sock is returned from the functions inet lookup established() and inet6 lookup established(), which can cause a crash when sock put() is called on it. To avoid this issue, sock gen put() is used instead of sock put() when sk->sk state is TCP TIME WAIT.

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

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-911

CWE-476

Related Identifiers

BDU:2025-12369

CVE-2025-37894

USN-7649-1

USN-7649-2

USN-7650-1

USN-7665-1

USN-7665-2

USN-7721-1

Affected Products

Astra Linux

Linuxmint

Linux Kernel

Red Os

Ubuntu

References · 146

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37894.json · Exploit
• https://ubuntu.com/security/CVE-2025-37968 · Vendor Advisory
• https://osv.dev/vulnerability/USN-7649-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-37894 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7650-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37911 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37954 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37955 · Vendor Advisory
• https://osv.dev/vulnerability/USN-7721-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37898 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37917 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-37894 · Security Note
• https://ubuntu.com/security/CVE-2025-38083 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37956 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37930 · Vendor Advisory