PT-2025-42250 · Linux · Linux Kernel

Published 2025-09-26 · Updated 2026-03-13 · CVE-2025-39975

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 (affected versions not specified)

Description An issue exists in the Linux kernel’s SMB client implementation within the smb2 compound op() function. The function incorrectly handles indexing when processing responses for commands, leading to improper handling of command results. Specifically, the loop processing command responses uses incorrect indices when accessing response buffers. If the computed index is greater than or equal to MAX COMPOUND, it can result in out-of-bounds access.

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

Exploit

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

BDU:2026-02706

CVE-2025-39975

MGASA-2025-0309

MGASA-2025-0310

OESA-2025-2656

OESA-2025-2657

OESA-2025-2658

Affected Products

Linux Kernel

References · 54

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39975.json · Exploit
• https://security-tracker.debian.org/tracker/CVE-2025-39975 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2025-0310 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2025-2658 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0224SE18 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-13-CVE-2025-39975 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-37781 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-40080 · Security Note
• https://osv.dev/vulnerability/MGASA-2025-0309 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2025-39975 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-39772 · Security Note
• https://osv.dev/vulnerability/OESA-2025-2656 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-22073 · Security Note
• https://cve.org/CVERecord?id=CVE-2025-39975 · Security Note
• https://bdu.fstec.ru/vul/2026-02706 · Security Note