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CVE-2025-38550 (GCVE-0-2025-38550)

Vulnerability from cvelistv5 – Published: 2025-08-16 11:34 – Updated: 2026-08-05 12:02
VLAI
Title
ipv6: mcast: Delay put pmc->idev in mld_del_delrec()
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 ip6_mc_clear_src() return.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: b564ec4491d24b40900c64ab9e29a208f17f3108 , < 1b5b413094af8d88a31b5df3fd262f6baca53841 (git)
Affected: 63ed8de4be81b699ca727e9f8e3344bd487806d7 , < 6e4eec86fe5f6b3fdbc702d1d36ac2a6e7ec0806 (git)
Affected: 63ed8de4be81b699ca727e9f8e3344bd487806d7 , < 728db00a14cacb37f36e9382ab5fad55caf890cc (git)
Affected: 63ed8de4be81b699ca727e9f8e3344bd487806d7 , < dcbc346f50a009d8b7f4e330f9f2e22d6442fa26 (git)
Affected: 63ed8de4be81b699ca727e9f8e3344bd487806d7 , < 7929d27c747eafe8fca3eecd74a334503ee4c839 (git)
Affected: 63ed8de4be81b699ca727e9f8e3344bd487806d7 , < 5f18e0130194550dff734e155029ae734378b5ea (git)
Affected: 63ed8de4be81b699ca727e9f8e3344bd487806d7 , < ae3264a25a4635531264728859dbe9c659fad554 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 5.15.190 , ≤ 5.15.* (semver)
Unaffected: 6.1.147 , ≤ 6.1.* (semver)
Unaffected: 6.6.100 , ≤ 6.6.* (semver)
Unaffected: 6.12.40 , ≤ 6.12.* (semver)
Unaffected: 6.15.8 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38550\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-08-16T12:15:31.137\",\"lastModified\":\"2026-07-30T06:23:25.383\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nipv6: mcast: Delay put pmc-\u003eidev in mld_del_delrec()\\n\\npmc-\u003eidev is still used in ip6_mc_clear_src(), so as mld_clear_delrec()\\ndoes, the reference should be put after ip6_mc_clear_src() return.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ipv6: mcast: Retraso en la colocaci\u00f3n de pmc-\u0026gt;idev en mld_del_delrec() pmc-\u0026gt;idev todav\u00eda se usa en ip6_mc_clear_src(), por lo que, como lo hace mld_clear_delrec(), la referencia se debe colocar despu\u00e9s del retorno de 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List\",\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-30T09:03:44+00:00",
      "cve": "CVE-2025-38550",
      "id": "CVE-2025-38550",
      "initial_release_date": "2025-08-16T00:00:00+00:00",
      "product_status:fixed": "1256",
      "product_status:known_affected": "36",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ipv6: mcast: Delay put pmc-\u003eidev in mld_del_delrec()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38550.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T00:19:27Z",
      "cve": "CVE-2025-38550",
      "id": "CVE-2025-38550",
      "initial_release_date": "2025-08-16T23:22:10Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "537",
      "product_status:known_not_affected": "310",
      "product_status:recommended": "533",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-38550",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-38550.json",
      "version": "36"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.