CVE-2025-38550 Details
Description
In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: Delay put pmc->idev in mld_del_delrec() pmc->idev is still used in ip6_mc_clear_src(), so as mld_clear_delrec() does, the reference should be put after ip6_mc_clear_src() return.
A vulnerability in the Linux kernel's IPv6 multicast handling has been addressed. The issue involved improper management of reference counts for multicast data, which could lead to use-after-free errors. Specifically, the problem arose in the 'mld_del_delrec' function, where the reference to the interface's multicast data was released before it was no longer needed, potentially allowing for invalid memory access. This vulnerability affects several versions of the Linux kernel.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed.
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
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/1b5b413094af8d88a31b5df3fd262f6baca53841 | kernel.org | |
| https://git.kernel.org/stable/c/5f18e0130194550dff734e155029ae734378b5ea | kernel.org | Patch |
| https://git.kernel.org/stable/c/6e4eec86fe5f6b3fdbc702d1d36ac2a6e7ec0806 | kernel.org | Patch |
| https://git.kernel.org/stable/c/728db00a14cacb37f36e9382ab5fad55caf890cc | kernel.org | Patch |
| https://git.kernel.org/stable/c/7929d27c747eafe8fca3eecd74a334503ee4c839 | kernel.org | Patch |
| https://git.kernel.org/stable/c/ae3264a25a4635531264728859dbe9c659fad554 | kernel.org | Patch |
| https://git.kernel.org/stable/c/dcbc346f50a009d8b7f4e330f9f2e22d6442fa26 | kernel.org | Patch |
| https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html | CVE | Mailing ListThird Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.13, < 5.15.190 >= 5.16, < 6.1.147 >= 6.2, < 6.6.100 >= 6.7, < 6.12.40 >= 6.13, < 6.15.8 6.16 rc1 6.16 rc2 6.16 rc3 6.16 rc4 6.16 rc5 6.16 rc6 |
CPE
Remediation
| |
| debian debian linux | 11.0 |
CPE
Remediation
| |
Change History
7 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 30, 2026 | CVE Modified | kernel.org |
| Jul 24, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jan 7, 2026 | Initial Analysis | [email protected] |
| Nov 3, 2025 | CVE Modified | CVE |
| Aug 28, 2025 | CVE Modified | kernel.org |
| Aug 16, 2025 | New CVE Received | kernel.org |