CVE-2025-38148 Details
Description
In the Linux kernel, the following vulnerability has been resolved: net: phy: mscc: Fix memory leak when using one step timestamping Fix memory leak when running one-step timestamping. When running one-step sync timestamping, the HW is configured to insert the TX time into the frame, so there is no reason to keep the skb anymore. As in this case the HW will never generate an interrupt to say that the frame was timestamped, then the frame will never released. Fix this by freeing the frame in case of one-step timestamping.
A memory leak vulnerability has been identified in the Linux kernel's handling of one-step synchronization timestamping. When this timestamping method is used, the hardware is set to insert the transmission time into the frame, eliminating the need to retain the socket buffer (skb). However, since the hardware does not generate an interrupt to indicate that the frame has been timestamped, the frame is never released, leading to a memory leak. This issue has been addressed by modifying the kernel to free the frame when one-step timestamping is active.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/0b40aeaf83ca04d4c9801e235b7533400c8b5f17 | kernel.org | Patch |
| https://git.kernel.org/stable/c/24b24295464f25fb771d36ed558c7cd942119361 | kernel.org | Patch |
| https://git.kernel.org/stable/c/66abe22017522dd56b820e41ca3a5b131a637001 | kernel.org | Patch |
| https://git.kernel.org/stable/c/846992645b25ec4253167e3f931e4597eb84af56 | kernel.org | Patch |
| https://git.kernel.org/stable/c/cdbabd316c5a4a9b0fda6aafe491e2db17fbb95d | kernel.org | Patch |
| https://git.kernel.org/stable/c/db2a12ddd3a31f668137ff6a4befc1343c79cbc4 | kernel.org | Patch |
| https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html | CVE | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-401 | Missing Release of Memory after Effective Lifetime | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.9, < 5.15.192 >= 5.16, < 6.1.142 >= 6.2, < 6.6.94 >= 6.7, < 6.12.34 >= 6.13, < 6.15.3 |
CPE
Remediation
| |
| debian debian linux | 11.0 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Dec 18, 2025 | Initial Analysis | [email protected] |
| Nov 3, 2025 | CVE Modified | CVE |
| Sep 9, 2025 | CVE Modified | kernel.org |
| Jul 3, 2025 | New CVE Received | kernel.org |