PT-2025-34418 · Linux+1 · Linux Kernel+1

Published 2025-05-28 · Updated 2025-08-22 · CVE-2025-38657

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

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

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

Description: The rtw89 core mlsr switch() function in the Linux kernel is susceptible to a shift wrapping issue. The link id value, obtained from user input via debugfs, can exceed the maximum allowable limit (BITS PER LONG), potentially leading to an out-of-bounds access. The security impact is limited as only root access is required to write to debugfs files.

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

Exploit

Out of bounds Read

Buffer Overflow

Weakness Enumeration

CWE-125

CWE-119

Related Identifiers

BDU:2026-03077

CVE-2025-38657

Affected Products

Astra Linux

Linux Kernel

References · 13

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38657.json · Exploit
• https://ubuntu.com/security/CVE-2025-38657 · Vendor Advisory
• https://git.kernel.org/stable/c/417cfa9cc44fbe6bceab786f9a4ee5a210f1288e · Patch
• https://osv.dev/vulnerability/CVE-2025-38657 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-03077 · Security Note
• https://git.kernel.org/stable/c/53cf488927a0f79968f9c03c4d1e00d2a79731c3 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2025-38657 · Security Note
• https://cve.org/CVERecord?id=CVE-2025-38657 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-38657 · Vendor Advisory
• https://git.kernel.org/linus/53cf488927a0f79968f9c03c4d1e00d2a79731c3 · Note
• https://twitter.com/CVEnew/status/1958933894389973037 · Twitter Post
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://lore.kernel.org/linux-cve-announce/2025082239-CVE-2025-38657-87b3@gregkh · Note