PT-2025-18457 · Linux+3 · Linux Kernel+3

Published 2025-04-14 · Updated 2026-05-26 · CVE-2025-37776

Positive Technologies (AI Summary)

CVSS v3.1

7.0

High

Base vector

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

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

Description A use-after-free issue in the smb break all levII oplock() function can cause racy issues when unlocking in the middle of the loop. This is resolved by using a read lock to protect the whole loop.

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

Exploit

Buffer Overflow

Use After Free

Weakness Enumeration

CWE-119

CWE-416

Related Identifiers

BDU:2026-01276

CVE-2025-37776

ECHO-F9B6-4152-69F8

USN-7594-1

USN-7594-2

USN-7594-3

Affected Products

Astra Linux

Debian

Linux Kernel

Ubuntu

References · 366

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37776.json · Exploit
• https://ubuntu.com/security/CVE-2025-22072 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22025 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2025-20530.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37873 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22064 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22094 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40325 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37872 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22079 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22073 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37767 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22023 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37942 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22128 · Vendor Advisory