---
id: CVE-2025-38550
title: |-
  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 ip…
summary: |-
  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 ip…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 5.13, < 5.15.190'
  - 'linux_kernel >= 5.16, < 6.1.147'
  - 'linux_kernel >= 6.2, < 6.6.100'
  - 'linux_kernel >= 6.7, < 6.12.40'
  - 'linux_kernel >= 6.13, < 6.15.8'
  - linux_kernel = 6.16
  - debian_linux = 11.0
patched:
  - linux_kernel 6.15.8
published: '2025-08-16'
updated: '2026-07-24'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-38550'
references:
  - url: 'https://git.kernel.org/stable/c/1b5b413094af8d88a31b5df3fd262f6baca53841'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5f18e0130194550dff734e155029ae734378b5ea'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6e4eec86fe5f6b3fdbc702d1d36ac2a6e7ec0806'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/728db00a14cacb37f36e9382ab5fad55caf890cc'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7929d27c747eafe8fca3eecd74a334503ee4c839'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ae3264a25a4635531264728859dbe9c659fad554'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/dcbc346f50a009d8b7f4e330f9f2e22d6442fa26'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00158
epssPercentile: 0.042
ingestedAt: '2026-07-24T15:30:57.794Z'
---

## Overview

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.

## Affected

- `linux_kernel >= 5.13, < 5.15.190`
- `linux_kernel >= 5.16, < 6.1.147`
- `linux_kernel >= 6.2, < 6.6.100`
- `linux_kernel >= 6.7, < 6.12.40`
- `linux_kernel >= 6.13, < 6.15.8`
- `linux_kernel = 6.16`
- `debian_linux = 11.0`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.15.8`