CVE-2025-68805 (GCVE-0-2025-68805)
Vulnerability from cvelistv5 – Published: 2026-01-13 15:29 – Updated: 2026-08-05 12:11
VLAI
EPSS
VEX
Title
fuse: fix io-uring list corruption for terminated non-committed requests
Summary
In the Linux kernel, the following vulnerability has been resolved:
fuse: fix io-uring list corruption for terminated non-committed requests
When a request is terminated before it has been committed, the request
is not removed from the queue's list. This leaves a dangling list entry
that leads to list corruption and use-after-free issues.
Remove the request from the queue's list for terminated non-committed
requests.
Severity
7.8 (High)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
c090c8abae4b6b77a1bee116aa6c385456ebef96 , < a6d1f1ace16d0e777a85f84267160052d3499b6e
(git)
Affected: c090c8abae4b6b77a1bee116aa6c385456ebef96 , < 95c39eef7c2b666026c69ab5b30471da94ea2874 (git) |
guessed | |
| Linux | Linux |
Affected:
6.14
Unaffected: 0 , < 6.14 (semver) Unaffected: 6.18.3 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/fuse/dev_uring.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"status": "affected",
"version": "c090c8abae4b6b77a1bee116aa6c385456ebef96",
"versionType": "git"
},
{
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"status": "affected",
"version": "c090c8abae4b6b77a1bee116aa6c385456ebef96",
"versionType": "git"
}
]
},
{
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"product": "Linux",
"programFiles": [
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"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.14"
},
{
"lessThan": "6.14",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.3",
"versionStartIncluding": "6.14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.19",
"versionStartIncluding": "6.14",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: fix io-uring list corruption for terminated non-committed requests\n\nWhen a request is terminated before it has been committed, the request\nis not removed from the queue\u0027s list. This leaves a dangling list entry\nthat leads to list corruption and use-after-free issues.\n\nRemove the request from the queue\u0027s list for terminated non-committed\nrequests."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The vulnerability is reached through local FUSE filesystem operations and io_uring commands on a connected /dev/fuse descriptor; no remote protocol reaches this path.\nAC:L - Once FUSE-over-io_uring is enabled, a malicious daemon controls buffer validity, request generation, and commit IDs, allowing it to trigger the dangling entry without winning an uncontrolled race.\nPR:L - FUSE supports user-namespace mounts, and namespace CAP_SYS_ADMIN is sufficient where /dev/fuse is accessible. No capability in the initial user namespace is required.\nUI:N - The attacker can create and operate the FUSE mount, invalidate the registered buffers, and submit subsequent commands without action by another user.\nS:U - Exploitation compromises the host kernel, which is the same security authority in which the vulnerable code executes.\nC:H - The dangling processing-list entry produces a kernel use-after-free whose reclaimed object can be manipulated to disclose arbitrary kernel memory.\nI:H - Deleting or moving the stale list node performs writes through freed or attacker-influenced list pointers, enabling kernel heap corruption and potential control-flow hijacking.\nA:H - The corrupted list and freed request can cause invalid kernel accesses, infinite traversal under a spinlock, an oops, or a kernel panic."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:11:37.322Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/a6d1f1ace16d0e777a85f84267160052d3499b6e"
},
{
"url": "https://git.kernel.org/stable/c/95c39eef7c2b666026c69ab5b30471da94ea2874"
}
],
"title": "fuse: fix io-uring list corruption for terminated non-committed requests",
"x_generator": {
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}
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},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-68805",
"datePublished": "2026-01-13T15:29:13.119Z",
"dateReserved": "2025-12-24T10:30:51.045Z",
"dateUpdated": "2026-08-05T12:11:37.322Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2025-68805",
"date": "2026-09-28",
"epss": "0.00141",
"percentile": "0.0284"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/fuse/dev_uring.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"status": "affected",
"version": "c090c8abae4b6b77a1bee116aa6c385456ebef96",
"versionType": "git"
},
{
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"status": "affected",
"version": "c090c8abae4b6b77a1bee116aa6c385456ebef96",
"versionType": "git"
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},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/fuse/dev_uring.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.14"
},
{
"lessThan": "6.14",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: fix io-uring list corruption for terminated non-committed requests\n\nWhen a request is terminated before it has been committed, the request\nis not removed from the queue\u0027s list. This leaves a dangling list entry\nthat leads to list corruption and use-after-free issues.\n\nRemove the request from the queue\u0027s list for terminated non-committed\nrequests."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nfuse: corrige la corrupci\u00f3n de la lista de io-uring para solicitudes terminadas no confirmadas\n\nCuando una solicitud es terminada antes de que haya sido confirmada, la solicitud no es eliminada de la lista de la cola. Esto deja una entrada de lista colgante que lleva a la corrupci\u00f3n de la lista y a problemas de uso despu\u00e9s de liberaci\u00f3n.\n\nEliminar la solicitud de la lista de la cola para solicitudes terminadas no confirmadas."
}
],
"id": "CVE-2025-68805",
"lastModified": "2026-07-30T06:24:46.177",
"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"
}
]
},
"published": "2026-01-13T16:16:02.637",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/95c39eef7c2b666026c69ab5b30471da94ea2874"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/a6d1f1ace16d0e777a85f84267160052d3499b6e"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Deferred"
}
},
"redhat_vex": {
"aggregate_severity": "Important",
"current_release_date": "2026-08-21T11:44:06+00:00",
"cve": "CVE-2025-68805",
"id": "CVE-2025-68805",
"initial_release_date": "2025-01-01T00:00:00+00:00",
"product_status:known_not_affected": "274",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: Linux kernel (fuse): Use-after-free vulnerability via io-uring list corruption",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68805.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-28T16:48:55Z",
"cve": "CVE-2025-68805",
"id": "CVE-2025-68805",
"initial_release_date": "2026-01-15T00:25:57Z",
"product_status:known_not_affected": "436",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2025-68805",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-68805.json",
"version": "9"
}
}
}
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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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