PT-2025-30818 · Linux+7 · Linux Kernel+7

Published 2025-01-01 · Updated 2026-04-20 · CVE-2025-38415

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/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 The Linux kernel contains a flaw related to Squashfs filesystem handling. A Syzkaller report identified a “shift-out-of-bounds” bug occurring when mounting a Squashfs filesystem concurrently with an ioctl operation. Specifically, the sb min blocksize() function can return 0, leading to an invalid value being assigned to msblk->devblksize log2, which subsequently causes a shift-out-of-bounds error in squashfs bio read().

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

Exploit

Out of bounds Read

Memory Corruption

Weakness Enumeration

CWE-125

CWE-787

Related Identifiers

ALSA-2026:1661

ALSA-2026:1662

ALSA-2026:2212

ALSA-2026:2282

BDU:2025-09134

CVE-2025-38415

DLA-4327-1

DLA-4328-1

DSA-5973-1

ECHO-A938-CD68-A34A

MGASA-2025-0218

MGASA-2025-0219

OESA-2025-1959

OESA-2025-1960

OESA-2025-1961

OESA-2025-2080

OESA-2025-2660

OESA-2025-2661

OPENSUSE-SU-2025:20081-1

RHSA-2026:1661

RHSA-2026:1662

RHSA-2026:2212

RHSA-2026:2282

RHSA-2026:2766

RHSA-2026:3088

RHSA-2026:3267

RHSA-2026:3268

RHSA-2026:3277

RHSA-2026:3293

RHSA-2026:3358

RHSA-2026:3360

RHSA-2026:3375

RHSA-2026:3388

RHSA-2026:3579

RHSA-2026:3634

RHSA-2026:3685

SUSE-SU-2025:02846-1

SUSE-SU-2025:02853-1

SUSE-SU-2025:02923-1

SUSE-SU-2025:02969-1

SUSE-SU-2025:02996-1

SUSE-SU-2025:02997-1

SUSE-SU-2025:03011-1

SUSE-SU-2025:03023-1

SUSE-SU-2025:20577-1

SUSE-SU-2025:20586-1

SUSE-SU-2025:20601-1

SUSE-SU-2025:20602-1

SUSE-SU-2025:21074-1

SUSE-SU-2025:21139-1

SUSE-SU-2025:21179-1

SUSE-SU-2025_02846-1

SUSE-SU-2025_02853-1

SUSE-SU-2025_02969-1

SUSE-SU-2025_02996-1

SUSE-SU-2025_02997-1

SUSE-SU-2025_03011-1

SUSE-SU-2025_03023-1

USN-7769-1

USN-7769-2

USN-7769-3

USN-7770-1

USN-7771-1

USN-7774-1

USN-7774-2

USN-7774-3

USN-7774-4

USN-7774-5

USN-7775-1

USN-7775-2

USN-7775-3

USN-7776-1

USN-7789-1

USN-7789-2

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

Astra Linux

Debian

Linuxmint

Linux Kernel

Red Os

Rocky Linux

Suse

Ubuntu

References · 3442

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38415.json · Exploit
• https://ubuntu.com/security/CVE-2025-38665 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-39911 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-39678 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40360 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40079 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-39675 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-39965 · Vendor Advisory
• https://osv.dev/vulnerability/USN-7771-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38455 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40070 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2025:20081-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38263 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37943 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-23140 · Vendor Advisory