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CVE-2025-38728

9.1 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: smb3: fix for slab out of bounds on mount to ksmbd With KASAN enabled, it is possible to get a slab out of bounds during mount…

Published Sep 4, 2025CWE-125EPSS 0.32%

Overview

CVE-2025-38728 is a critical-severity vulnerability. It was published on September 4, 2025 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

smb3: fix for slab out of bounds on mount to ksmbd

With KASAN enabled, it is possible to get a slab out of bounds

during mount to ksmbd due to missing check in parse_server_interfaces()

(see below):

BUG: KASAN: slab-out-of-bounds in

parse_server_interfaces+0x14ee/0x1880 [cifs]

Read of size 4 at addr ffff8881433dba98 by task mount/9827

CPU: 5 UID: 0 PID: 9827 Comm: mount Tainted: G

OE 6.16.0-rc2-kasan #2 PREEMPT(voluntary)

Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE

Hardware name: Dell Inc. Precision Tower 3620/0MWYPT,

BIOS 2.13.1 06/14/2019

Call Trace:

<TASK>

dump_stack_lvl+0x9f/0xf0

print_report+0xd1/0x670

__virt_addr_valid+0x22c/0x430

? parse_server_interfaces+0x14ee/0x1880 [cifs]

? kasan_complete_mode_report_info+0x2a/0x1f0

? parse_server_interfaces+0x14ee/0x1880 [cifs]

kasan_report+0xd6/0x110

parse_server_interfaces+0x14ee/0x1880 [cifs]

__asan_report_load_n_noabort+0x13/0x20

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/7d34ec36abb84fdfb6632a0f2cbda90379ae21fcRefgit.kernel.org/stable/c/8de33d4d72e8fae3502ec3850bd7b14e7c7328b6Refgit.kernel.org/stable/c/9bdb8e98a0073c73ab3e6c631ec78877ceb64565Refgit.kernel.org/stable/c/a0620e1525663edd8c4594f49fb75fe5be4724b0Refgit.kernel.org/stable/c/a542f93a123555d09c3ce8bc947f7b56ad8e6463Refgit.kernel.org/stable/c/f6eda5b0e8f8123564c5b34f5801d63243032eacReflists.debian.org/debian-lts-announce/2025/10/msg00008.htmlRefcert-portal.siemens.com/productcert/html/ssa-032379.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-38728?

CVE-2025-38728 is a critical-severity vulnerability. It was published on September 4, 2025 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2025-38728?

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-38728?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-38728?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38728 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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