What is CVE-2025-39715?

CVE-2025-39715 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.17 onward and patched in 6.1.149, 6.6.103, 6.12.44 and others. CVE-2025-39715 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-39715?

CVE-2025-39715 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2025-39715?

Yes, CVE-2025-39715 has been patched. Fixed versions include 6.1.149, 6.6.103, 6.12.44 and others. If you are running Linux kernel 5.17 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-39715 actively exploited?

CVE-2025-39715 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-39715

Medium

In the Linux kernel, the following vulnerability has been resolved: parisc: Revise gateway LWS calls to probe user read access We use load and stbys,e instructions to trigger memory reference interruptions without writing to memory. Because of the way read access support is implemented, read access interruptions are only triggered at privilege levels 2 and 3. The kernel and gateway page execute at privilege level 0, so this code never triggers a read access interruption. Thus, it is currently possible for user code to execute a LWS compare and swap operation at an address that is read protected at privilege level 3 (PRIV_USER). Fix this by probing read access rights at privilege level 3 and branching to lws_fault if access isn't allowed.

Package Linux Kernel

Published 2025-09-05

Last modified 2026-05-12

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Affected versions

Linux kernel versions 5.17 and later are affected. Fixed in 6.1.149, 6.6.103, 6.12.44, 6.16.4, 6.17 and their respective stable series.

Affected from

≥ 5.17

Fixed in

✓ 6.1.149 6.1.x ✓ 6.6.103 6.6.x ✓ 6.12.44 6.12.x ✓ 6.16.4 6.16.x ✓ 6.17

References

7 total

Kernel Git
https://git.kernel.org/stable/c/8bccf47adbf658293528e86960e6d6f736b1c9f7

Patch
Kernel Git
https://git.kernel.org/stable/c/9b6af875baba9c4679b55f4561e201485451305f

Patch
Kernel Git
https://git.kernel.org/stable/c/bc0a24c24ceebabb5ba65900e332233d79e625e6

Patch
Kernel Git
https://git.kernel.org/stable/c/e8b496c52aa0c6572d88db7cab85aeea6f9c194d

Patch
Kernel Git
https://git.kernel.org/stable/c/f6334f4ae9a4e962ba74b026e1d965dfdf8cbef8

Patch

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2025-39715

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-09-05

Modified 2026-05-12

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-39715?

CVE-2025-39715 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.17 onward and has been patched in 6.1.149, 6.6.103, 6.12.44 and others. CVE-2025-39715 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-39715?

CVE-2025-39715 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2025-39715?

Yes. CVE-2025-39715 has been patched. Fixed versions include 6.1.149, 6.6.103, 6.12.44 and others. If you are running Linux kernel 5.17 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-39715 actively exploited?

No. CVE-2025-39715 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.