CVE-2025-38546 (GCVE-0-2025-38546)
Vulnerability from cvelistv5 – Published: 2025-08-16 11:22 – Updated: 2026-05-11 21:30
VLAI
EPSS
VEX
Title
atm: clip: Fix memory leak of struct clip_vcc.
Summary
In the Linux kernel, the following vulnerability has been resolved:
atm: clip: Fix memory leak of struct clip_vcc.
ioctl(ATMARP_MKIP) allocates struct clip_vcc and set it to
vcc->user_back.
The code assumes that vcc_destroy_socket() passes NULL skb
to vcc->push() when the socket is close()d, and then clip_push()
frees clip_vcc.
However, ioctl(ATMARPD_CTRL) sets NULL to vcc->push() in
atm_init_atmarp(), resulting in memory leak.
Let's serialise two ioctl() by lock_sock() and check vcc->push()
in atm_init_atmarp() to prevent memleak.
Severity
5.5 (Medium)
Assigner
References
10 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2fb37ab3226606cbfc9b2b6f9e301b0b735734c5
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9e4dbeee56f614e3f1e166e5d0655a999ea185ef (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1c075e88d5859a2c6b43b27e0e46fb281cef8039 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0c17ff462d98c997d707ee5cf4e4a9b1b52b9d90 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1fb9fb5a4b5cec2d56e26525ef8c519de858fa60 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9f771816f14da6d6157a8c30069091abf6b566fb (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < cb2e4a2f8f268d8fba6662f663a2e57846f14a8d (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 62dba28275a9a3104d4e33595c7b3328d4032d8d (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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{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: atm: clip: Se corrige la fuga de memoria de la estructura clip_vcc. ioctl(ATMARP_MKIP) asigna la estructura clip_vcc y la establece en vcc-\u0026gt;user_back. El c\u00f3digo asume que vcc_destroy_socket() pasa un skb nulo a vcc-\u0026gt;push() cuando se cierra el socket, y que clip_push() libera clip_vcc. Sin embargo, ioctl(ATMARPD_CTRL) establece vcc-\u0026gt;push() en nulo en atm_init_atmarp(), lo que provoca una fuga de memoria. Serialicemos dos ioctl() mediante lock_sock() y comprobemos vcc-\u0026gt;push() en atm_init_atmarp() para evitar fugas de memoria."
}
],
"id": "CVE-2025-38546",
"lastModified": "2026-06-17T09:17:05.023",
"metrics": {
"cvssMetricV31": [
{
"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": "2025-08-16T12:15:30.620",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/0c17ff462d98c997d707ee5cf4e4a9b1b52b9d90"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/1c075e88d5859a2c6b43b27e0e46fb281cef8039"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/1fb9fb5a4b5cec2d56e26525ef8c519de858fa60"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/2fb37ab3226606cbfc9b2b6f9e301b0b735734c5"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/62dba28275a9a3104d4e33595c7b3328d4032d8d"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/9e4dbeee56f614e3f1e166e5d0655a999ea185ef"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/9f771816f14da6d6157a8c30069091abf6b566fb"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/cb2e4a2f8f268d8fba6662f663a2e57846f14a8d"
},
{
"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": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-401"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-06-30T10:29:55+00:00",
"cve": "CVE-2025-38546",
"id": "CVE-2025-38546",
"initial_release_date": "2025-08-16T00:00:00+00:00",
"product_status:known_affected": "198",
"product_status:known_not_affected": "76",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: Linux kernel: Memory leak in ATM clip module can lead to denial of service",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38546.json",
"version": "3"
}
}
}
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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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