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EUVD-2026-375719
European Vulnerability Database identifier assigned by ENISAReserved
2026-10-02 08:39
Assigner
ENISA
Alias of
a CVE record, shown under related vulnerabilities.
This identifier carries no description, severity or references of its own:
they belong to that CVE.
{
"assigner": "ENISA",
"date_reserved": "2026-10-02T08:39:57.789779+00:00",
"id": "EUVD-2026-375719"
}
CVE-2026-97995 (GCVE-0-2026-97995)
Vulnerability from cvelistv5 – Published: 2026-09-25 10:23 – Updated: 2026-10-03 11:01
VLAI
EPSS
VEX
Title
virtio_console: do not free control-out buffers on remove
Summary
In the Linux kernel, the following vulnerability has been resolved:
virtio_console: do not free control-out buffers on remove
__send_control_msg() publishes &portdev->cpkt as the control-out
virtqueue cookie. remove_vqs() walks every virtqueue and passes leftover
cookies to free_buf(), which treats them as struct port_buffer and
reads sgpages.
If a control message is still on c_ovq when the device is unbound,
free_buf() reads past the ports_device object.
KASAN reported slab-out-of-bounds in free_buf():
free_buf
remove_vqs
virtcons_remove
unbind_store
The object was the ports_device allocated in virtcons_probe().
Drain c_ovq without freeing. The packet lives in portdev and is released
with it.
Severity
No CVSS data available.
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b , < b1f39c2a676698cc64c8e105e08b25111a112ec6
(git)
Affected: a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b , < e03522a990cd2e0f1a736eaa349a9df9ab8541c3 (git) Affected: a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b , < 8f6cfc3eca79b8e108d0823756101e2f4f9d811f (git) Affected: a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b , < 2e40c69b9c3448b9c6609cd02013da593b2e123b (git) Affected: a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b , < 177ee901aa2bab02e7f1f8edbb814fd5e386ed62 (git) Affected: a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b , < a80c33488e0bbe642ed803b13a4ac8078a70b507 (git) Affected: a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b , < f620c40ea6862feed84deb105568b21ec53a7830 (git) Affected: a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b , < 894f98e73983f37354214a89a3a7fd35bf9e3072 (git) Affected: f92b16b815efe8207090a9b5a767618fd89542ca (git) Affected: d2bbfac82b7942afc5d8e564d7087835280df495 (git) Affected: a88e13d9a092fbb772d380944b44eb549ef131fe (git) Affected: dd807a784fd36f4136516d5858efb6473dda422c (git) Affected: 47cb14192bcbba3f15b1c3561e05e084e56fdef6 (git) Affected: 6b1c41a0f7183702abb7a104c6c7e196ad69a6b3 (git) Affected: 9037306163a6ba5587e4b5ca511ac7be4fb7295b (git) Affected: 3.16.60 , < 3.17 (semver) Affected: 3.18.108 , < 3.19 (semver) Affected: 4.1.52 , < 4.2 (semver) Affected: 4.4.131 , < 4.5 (semver) Affected: 4.9.98 , < 4.10 (semver) Affected: 4.14.39 , < 4.15 (semver) Affected: 4.16.7 , < 4.17 (semver) |
|
| Linux | Linux |
Affected:
4.17
Unaffected: 0 , < 4.17 (semver) Unaffected: 5.10.271 , ≤ 5.10.* (semver) Unaffected: 5.15.222 , ≤ 5.15.* (semver) Unaffected: 6.1.189 , ≤ 6.1.* (semver) Unaffected: 6.6.158 , ≤ 6.6.* (semver) Unaffected: 6.12.111 , ≤ 6.12.* (semver) Unaffected: 6.18.53 , ≤ 6.18.* (semver) Unaffected: 7.2.7 , ≤ 7.2.* (semver) Unaffected: 7.3-rc3 , ≤ * (original_commit_for_fix) |
{
"containers": {
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{
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"product": "Linux",
"programFiles": [
"drivers/char/virtio_console.c"
],
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"vendor": "Linux",
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"versionType": "git"
},
{
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{
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},
{
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"status": "affected",
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"versionType": "git"
},
{
"status": "affected",
"version": "f92b16b815efe8207090a9b5a767618fd89542ca",
"versionType": "git"
},
{
"status": "affected",
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"versionType": "git"
},
{
"status": "affected",
"version": "a88e13d9a092fbb772d380944b44eb549ef131fe",
"versionType": "git"
},
{
"status": "affected",
"version": "dd807a784fd36f4136516d5858efb6473dda422c",
"versionType": "git"
},
{
"status": "affected",
"version": "47cb14192bcbba3f15b1c3561e05e084e56fdef6",
"versionType": "git"
},
{
"status": "affected",
"version": "6b1c41a0f7183702abb7a104c6c7e196ad69a6b3",
"versionType": "git"
},
{
"status": "affected",
"version": "9037306163a6ba5587e4b5ca511ac7be4fb7295b",
"versionType": "git"
},
{
"lessThan": "3.17",
"status": "affected",
"version": "3.16.60",
"versionType": "semver"
},
{
"lessThan": "3.19",
"status": "affected",
"version": "3.18.108",
"versionType": "semver"
},
{
"lessThan": "4.2",
"status": "affected",
"version": "4.1.52",
"versionType": "semver"
},
{
"lessThan": "4.5",
"status": "affected",
"version": "4.4.131",
"versionType": "semver"
},
{
"lessThan": "4.10",
"status": "affected",
"version": "4.9.98",
"versionType": "semver"
},
{
"lessThan": "4.15",
"status": "affected",
"version": "4.14.39",
"versionType": "semver"
},
{
"lessThan": "4.17",
"status": "affected",
"version": "4.16.7",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/char/virtio_console.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.17"
},
{
"lessThan": "4.17",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.7",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3-rc3",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.271",
"versionStartIncluding": "4.17",
"vulnerable": true
},
{
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"versionEndExcluding": "5.15.222",
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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\nvirtio_console: do not free control-out buffers on remove\n\n__send_control_msg() publishes \u0026portdev-\u003ecpkt as the control-out\nvirtqueue cookie. remove_vqs() walks every virtqueue and passes leftover\ncookies to free_buf(), which treats them as struct port_buffer and\nreads sgpages.\n\nIf a control message is still on c_ovq when the device is unbound,\nfree_buf() reads past the ports_device object.\n\nKASAN reported slab-out-of-bounds in free_buf():\n\n\tfree_buf\n\tremove_vqs\n\tvirtcons_remove\n\tunbind_store\n\nThe object was the ports_device allocated in virtcons_probe().\n\nDrain c_ovq without freeing. The packet lives in portdev and is released\nwith it."
}
],
"providerMetadata": {
"dateUpdated": "2026-10-03T11:01:22.745Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
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{
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},
{
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},
{
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},
{
"url": "https://git.kernel.org/stable/c/a80c33488e0bbe642ed803b13a4ac8078a70b507"
},
{
"url": "https://git.kernel.org/stable/c/f620c40ea6862feed84deb105568b21ec53a7830"
},
{
"url": "https://git.kernel.org/stable/c/894f98e73983f37354214a89a3a7fd35bf9e3072"
}
],
"title": "virtio_console: do not free control-out buffers on remove",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-97995",
"datePublished": "2026-09-25T10:23:26.307Z",
"dateReserved": "2026-09-25T10:18:58.209Z",
"dateUpdated": "2026-10-03T11:01:22.745Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Trend slope:
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(linear fit over daily sighting counts)
Show additional events:
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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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