CVE-2025-38542 (GCVE-0-2025-38542)
Vulnerability from cvelistv5 – Published: 2025-08-16 11:22 – Updated: 2026-08-05 12:02
VLAI
EPSS
VEX
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)
Assigner
References
10 references
Impacted products
2 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 | |
| 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) |
guessed |
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"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
"matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: appletalk: Fix device refcount leak in atrtr_create()\n\nWhen updating an existing route entry in atrtr_create(), the old device\nreference was not being released before assigning the new device,\nleading to a device refcount leak. Fix this by calling dev_put() to\nrelease the old device reference before holding the new one."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: appletalk: Se corrige la fuga de referencia del dispositivo en atrtr_create(). 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."
}
],
"id": "CVE-2025-38542",
"lastModified": "2026-07-30T06:23:25.000",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2025-08-16T12:15:30.083",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/473f3eadfc73b0fb6d8dee5829d19a5772e387f7"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/4a17370da6e476d3d275534e9e9cd2d02c57ca46"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/64124cf0aab0dd1e18c0fb5ae66e45741e727f8b"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/711c80f7d8b163d3ecd463cd96f07230f488e750"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/a7852b01793669248dce0348d14df89e77a32afd"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/b2f5dfa87367fdce9f8b995bc6c38f64f9ea2c90"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/b92bedf71f25303e203a4e657489d76691a58119"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/d2e9f50f0bdad73b64a871f25186b899624518c4"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-Other"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"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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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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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.
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