PT-2025-33763 · Linux+2 · Linux Kernel+2

Published 2025-08-02 · Updated 2025-11-25 · CVE-2025-38564

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

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

Description: The perf mmap() function in the Linux kernel does not correctly handle buffer mapping failures. Specifically, if mapping a buffer read-only into the page table fails after successful allocation or attachment, the function leaks reference counts, corrupts user virtual memory accounting, and results in an unbalanced invocation of event::event mapped(). This occurs because the event::event mapped() invocation is performed before the map range() call, and perf mmap close() is not invoked on map range() failure, leading to resource leaks and accounting errors.

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

Exploit

Weakness Enumeration

CWE-911

Related Identifiers

BDU:2025-10723

CVE-2025-38564

OPENSUSE-SU-2025:20081-1

SUSE-SU-2025:21074-1

SUSE-SU-2025:21139-1

SUSE-SU-2025:21179-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 1263

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38564.json · Exploit
• https://osv.dev/vulnerability/openSUSE-SU-2025:20081-1 · Vendor Advisory
• https://git.kernel.org/stable/c/f74b9f4ba63ffdf597aaaa6cad7e284cb8e04820 · Patch
• https://ubuntu.com/security/CVE-2025-38564 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:21139-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-38564 · Security Note
• https://git.kernel.org/stable/c/a9025f73c88d9d6e125743a43afc569da3ce5328 · Patch
• https://git.kernel.org/stable/c/831e1c90a5d72e6977a57c44f47c46b73a438695 · Patch
• https://osv.dev/vulnerability/CVE-2025-38564 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-10723 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:21074-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-38564 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-38564 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:21179-1 · Vendor Advisory
• https://suse.com/security/cve/CVE-2025-39845 · Note