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CVE-2025-38542 (GCVE-0-2025-38542)

Vulnerability from cvelistv5 – Published: 2025-08-16 11:22 – Updated: 2026-08-05 12:02
VLAI
Title
net: appletalk: Fix device refcount leak in atrtr_create()
Summary
In the Linux kernel, the following vulnerability has been resolved: net: appletalk: Fix device refcount leak in atrtr_create() When updating an existing route entry in atrtr_create(), the old device reference was not being released before assigning the new device, leading to a device refcount leak. Fix this by calling dev_put() to release the old device reference before holding the new one.
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: c7f905f0f6d49ed8c1aa4566c31f0383a0ba0c9d , < b92bedf71f25303e203a4e657489d76691a58119 (git)
Affected: c7f905f0f6d49ed8c1aa4566c31f0383a0ba0c9d , < a7852b01793669248dce0348d14df89e77a32afd (git)
Affected: c7f905f0f6d49ed8c1aa4566c31f0383a0ba0c9d , < b2f5dfa87367fdce9f8b995bc6c38f64f9ea2c90 (git)
Affected: c7f905f0f6d49ed8c1aa4566c31f0383a0ba0c9d , < d2e9f50f0bdad73b64a871f25186b899624518c4 (git)
Affected: c7f905f0f6d49ed8c1aa4566c31f0383a0ba0c9d , < 4a17370da6e476d3d275534e9e9cd2d02c57ca46 (git)
Affected: c7f905f0f6d49ed8c1aa4566c31f0383a0ba0c9d , < 473f3eadfc73b0fb6d8dee5829d19a5772e387f7 (git)
Affected: c7f905f0f6d49ed8c1aa4566c31f0383a0ba0c9d , < 64124cf0aab0dd1e18c0fb5ae66e45741e727f8b (git)
Affected: c7f905f0f6d49ed8c1aa4566c31f0383a0ba0c9d , < 711c80f7d8b163d3ecd463cd96f07230f488e750 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 5.4.296 , ≤ 5.4.* (semver)
Unaffected: 5.10.240 , ≤ 5.10.* (semver)
Unaffected: 5.15.189 , ≤ 5.15.* (semver)
Unaffected: 6.1.146 , ≤ 6.1.* (semver)
Unaffected: 6.6.99 , ≤ 6.6.* (semver)
Unaffected: 6.12.39 , ≤ 6.12.* (semver)
Unaffected: 6.15.7 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
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Al actualizar una entrada de ruta existente en atrtr_create(), la referencia del dispositivo anterior no se liberaba antes de asignar el nuevo dispositivo, lo que provocaba una fuga de referencia del dispositivo. Para solucionar esto, llame a dev_put() para liberar la referencia del dispositivo anterior antes de guardar la nueva.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/appletalk/ddp.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"c7f905f0f6d49ed8c1aa4566c31f0383a0ba0c9d\",\"lessThan\":\"b92bedf71f25303e203a4e657489d76691a58119\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c7f905f0f6d49ed8c1aa4566c31f0383a0ba0c9d\",\"lessThan\":\"a7852b01793669248dce0348d14df89e77a32afd\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c7f905f0f6d49ed8c1aa4566c31f0383a0ba0c9d\",\"lessThan\":\"b2f5dfa87367fdce9f8b995bc6c38f64f9ea2c90\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c7f905f0f6d49ed8c1aa4566c31f0383a0ba0c9d\",\"lessThan\":\"d2e9f50f0bdad73b64a871f25186b899624518c4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c7f905f0f6d49ed8c1aa4566c31f0383a0ba0c9d\",\"lessThan\":\"4a17370da6e476d3d275534e9e9cd2d02c57ca46\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c7f905f0f6d49ed8c1aa4566c31f0383a0ba0c9d\",\"lessThan\":\"473f3eadfc73b0fb6d8dee5829d19a5772e387f7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c7f905f0f6d49ed8c1aa4566c31f0383a0ba0c9d\",\"lessThan\":\"64124cf0aab0dd1e18c0fb5ae66e45741e727f8b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c7f905f0f6d49ed8c1aa4566c31f0383a0ba0c9d\",\"lessThan\":\"711c80f7d8b163d3ecd463cd96f07230f488e750\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/appletalk/ddp.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.12\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.12\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.296\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.240\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.189\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.146\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.99\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.39\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.15.7\",\"lessThanOrEqual\":\"6.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.16\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-Other\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.6.13\",\"versionEndExcluding\":\"5.4.296\",\"matchCriteriaId\":\"4FB4C5CA-BF3E-41D0-9451-C110FB7E62C6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.240\",\"matchCriteriaId\":\"0E73A49A-F9B2-470F-91B2-6FAB6239BDB6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.189\",\"matchCriteriaId\":\"3CE0FB9A-DBE8-48B6-BF6E-3C724A4991E3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.146\",\"matchCriteriaId\":\"D8DA1166-5C95-475E-BF65-1DF621968E96\"},{\"vulnerable\":tr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List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-07-30T10:09:02+00:00",
      "cve": "CVE-2025-38542",
      "id": "CVE-2025-38542",
      "initial_release_date": "2025-08-16T00:00:00+00:00",
      "product_status:known_affected": "14",
      "product_status:known_not_affected": "260",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel: Denial of Service via device refcount leak in Appletalk protocol implementation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38542.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-03T00:14:30Z",
      "cve": "CVE-2025-38542",
      "id": "CVE-2025-38542",
      "initial_release_date": "2025-08-16T23:22:21Z",
      "product_status:known_affected": "6",
      "product_status:known_not_affected": "569",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-38542",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-38542.json",
      "version": "22"
    }
  }
}



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Tags
Taxonomy of the tags.





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.