CVE-2025-68732 (GCVE-0-2025-68732)
Vulnerability from cvelistv5 – Published: 2025-12-24 10:33 – Updated: 2026-05-11 21:52
VLAI
EPSS
VEX
Title
gpu: host1x: Fix race in syncpt alloc/free
Summary
In the Linux kernel, the following vulnerability has been resolved:
gpu: host1x: Fix race in syncpt alloc/free
Fix race condition between host1x_syncpt_alloc()
and host1x_syncpt_put() by using kref_put_mutex()
instead of kref_put() + manual mutex locking.
This ensures no thread can acquire the
syncpt_mutex after the refcount drops to zero
but before syncpt_release acquires it.
This prevents races where syncpoints could
be allocated while still being cleaned up
from a previous release.
Remove explicit mutex locking in syncpt_release
as kref_put_mutex() handles this atomically.
Severity
No CVSS data available.
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
f5ba33fb9690566c382624637125827b5512e766 , < ca9388fba50dac2eb71c13702b7022a801bef90e
(git)
Affected: f5ba33fb9690566c382624637125827b5512e766 , < 4aeaece518fa4436af93d1d8b786200d9656ff4b (git) Affected: f5ba33fb9690566c382624637125827b5512e766 , < 6245cce711e2cdb2cc75c0bb8632952e36f8c972 (git) Affected: f5ba33fb9690566c382624637125827b5512e766 , < 4e6e07ce0197aecfb6c4a62862acc93b3efedeb7 (git) Affected: f5ba33fb9690566c382624637125827b5512e766 , < d138f73ffb0c57ded473c577719e6e551b7b1f27 (git) Affected: f5ba33fb9690566c382624637125827b5512e766 , < 79197c6007f2afbfd7bcf5b9b80ccabf8483d774 (git) Affected: f5ba33fb9690566c382624637125827b5512e766 , < c7d393267c497502fa737607f435f05dfe6e3d9b (git) |
guessed | |
| Linux | Linux |
Affected:
5.13
Unaffected: 0 , < 5.13 (semver) Unaffected: 5.15.198 , ≤ 5.15.* (semver) Unaffected: 6.1.160 , ≤ 6.1.* (semver) Unaffected: 6.6.120 , ≤ 6.6.* (semver) Unaffected: 6.12.63 , ≤ 6.12.* (semver) Unaffected: 6.17.13 , ≤ 6.17.* (semver) Unaffected: 6.18.2 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix) |
guessed |
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"programFiles": [
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{
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"version": "0",
"versionType": "semver"
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{
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"status": "unaffected",
"version": "5.15.198",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.1.160",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.6.120",
"versionType": "semver"
},
{
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"version": "6.12.63",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.17.13",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
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},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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{
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{
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{
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{
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpu: host1x: Fix race in syncpt alloc/free\n\nFix race condition between host1x_syncpt_alloc()\nand host1x_syncpt_put() by using kref_put_mutex()\ninstead of kref_put() + manual mutex locking.\n\nThis ensures no thread can acquire the\nsyncpt_mutex after the refcount drops to zero\nbut before syncpt_release acquires it.\nThis prevents races where syncpoints could\nbe allocated while still being cleaned up\nfrom a previous release.\n\nRemove explicit mutex locking in syncpt_release\nas kref_put_mutex() handles this atomically."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T21:52:16.287Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/ca9388fba50dac2eb71c13702b7022a801bef90e"
},
{
"url": "https://git.kernel.org/stable/c/4aeaece518fa4436af93d1d8b786200d9656ff4b"
},
{
"url": "https://git.kernel.org/stable/c/6245cce711e2cdb2cc75c0bb8632952e36f8c972"
},
{
"url": "https://git.kernel.org/stable/c/4e6e07ce0197aecfb6c4a62862acc93b3efedeb7"
},
{
"url": "https://git.kernel.org/stable/c/d138f73ffb0c57ded473c577719e6e551b7b1f27"
},
{
"url": "https://git.kernel.org/stable/c/79197c6007f2afbfd7bcf5b9b80ccabf8483d774"
},
{
"url": "https://git.kernel.org/stable/c/c7d393267c497502fa737607f435f05dfe6e3d9b"
}
],
"title": "gpu: host1x: Fix race in syncpt alloc/free",
"x_generator": {
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}
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"cveId": "CVE-2025-68732",
"datePublished": "2025-12-24T10:33:14.664Z",
"dateReserved": "2025-12-24T10:30:51.028Z",
"dateUpdated": "2026-05-11T21:52:16.287Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
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"date": "2026-11-08",
"epss": "0.00193",
"percentile": "0.09062"
},
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"cve": "CVE-2025-68732",
"id": "msrc_CVE-2025-68732",
"initial_release_date": "2025-12-02T00:00:00.000Z",
"product_status:fixed": "1",
"product_status:known_affected": "3",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "gpu: host1x: Fix race in syncpt alloc/free",
"url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-68732.json",
"version": "5"
},
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],
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{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpu: host1x: Fix race in syncpt alloc/free\n\nFix race condition between host1x_syncpt_alloc()\nand host1x_syncpt_put() by using kref_put_mutex()\ninstead of kref_put() + manual mutex locking.\n\nThis ensures no thread can acquire the\nsyncpt_mutex after the refcount drops to zero\nbut before syncpt_release acquires it.\nThis prevents races where syncpoints could\nbe allocated while still being cleaned up\nfrom a previous release.\n\nRemove explicit mutex locking in syncpt_release\nas kref_put_mutex() handles this atomically."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ngpu: host1x: Corrige condici\u00f3n de carrera en la asignaci\u00f3n/liberaci\u00f3n de syncpt\n\nCorrige la condici\u00f3n de carrera entre host1x_syncpt_alloc() y host1x_syncpt_put() mediante el uso de kref_put_mutex() en lugar de kref_put() + bloqueo manual de mutex.\n\nEsto asegura que ning\u00fan hilo pueda adquirir el syncpt_mutex despu\u00e9s de que el contador de referencias (refcount) caiga a cero, pero antes de que syncpt_release lo adquiera. Esto previene condiciones de carrera donde los syncpoints podr\u00edan ser asignados mientras a\u00fan se est\u00e1n limpiando de una liberaci\u00f3n anterior.\n\nElimina el bloqueo expl\u00edcito de mutex en syncpt_release ya que kref_put_mutex() maneja esto de forma at\u00f3mica."
}
],
"id": "CVE-2025-68732",
"lastModified": "2026-10-13T11:10:00.203",
"metrics": {},
"published": "2025-12-24T11:16:02.497",
"references": [
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],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Deferred"
}
},
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-11-07T04:42:04+00:00",
"cve": "CVE-2025-68732",
"id": "CVE-2025-68732",
"initial_release_date": "2025-12-24T00:00:00+00:00",
"product_status:known_affected": "110",
"product_status:known_not_affected": "90",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: Linux kernel: Denial of Service in GPU host1x due to race condition",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68732.json",
"version": "3"
}
}
}
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| Author | Source | Type | Date | Other |
|---|
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vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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They have not been verified by an analyst and are provided for guidance only.
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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.