What is CVE-2025-38565?

CVE-2025-38565 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 4.0 onward and patched in 5.4.297, 5.10.241, 5.15.190 and others. CVE-2025-38565 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-38565?

CVE-2025-38565 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2025-38565?

Yes, CVE-2025-38565 has been patched. Fixed versions include 5.4.297, 5.10.241, 5.15.190 and others. If you are running Linux kernel 4.0 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-38565 actively exploited?

CVE-2025-38565 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-38565

High

In the Linux kernel, the following vulnerability has been resolved: perf/core: Exit early on perf_mmap() fail When perf_mmap() fails to allocate a buffer, it still invokes the event_mapped() callback of the related event. On X86 this might increase the perf_rdpmc_allowed reference counter. But nothing undoes this as perf_mmap_close() is never called in this case, which causes another reference count leak. Return early on failure to prevent that.

Package Linux Kernel

Published 2025-08-19

Last modified 2026-01-08

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected versions

Linux kernel versions 4.0 and later are affected. Fixed in 5.4.297, 5.10.241, 5.15.190, 6.1.148, 6.6.102, 6.12.42, 6.15.10, 6.16.1, 6.17 and their respective stable series.

Affected from

≥ 4.0

Fixed in

✓ 5.4.297 5.4.x ✓ 5.10.241 5.10.x ✓ 5.15.190 5.15.x ✓ 6.1.148 6.1.x ✓ 6.6.102 6.6.x ✓ 6.12.42 6.12.x ✓ 6.15.10 6.15.x ✓ 6.16.1 6.16.x ✓ 6.17

References

11 total

Kernel Git
https://git.kernel.org/stable/c/07091aade394f690e7b655578140ef84d0e8d7b0

Patch
Kernel Git
https://git.kernel.org/stable/c/163b0d1a209fe0df5476c1df2330ca12b55abf92

Patch
Kernel Git
https://git.kernel.org/stable/c/27d44145bd576bbef9bf6165bcd78128ec3e6cbd

Patch
Kernel Git
https://git.kernel.org/stable/c/5ffda7f3ed76ec8defc19d985e33b3b82ba07839

Patch
Kernel Git
https://git.kernel.org/stable/c/7ff8521f30c4c2fcd4e88bd7640486602bf8a650

Patch

Showing 5 of 11 references View all on NVD

Details

CVE ID CVE-2025-38565

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2025-08-19

Modified 2026-01-08

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-38565?

CVE-2025-38565 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 4.0 onward and has been patched in 5.4.297, 5.10.241, 5.15.190 and others. CVE-2025-38565 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-38565?

CVE-2025-38565 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2025-38565?

Yes. CVE-2025-38565 has been patched. Fixed versions include 5.4.297, 5.10.241, 5.15.190 and others. If you are running Linux kernel 4.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-38565 actively exploited?

No. CVE-2025-38565 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.