FKIE_CVE-2023-53794
Vulnerability from fkie_nvd - Published: 2025-12-09 01:16 - Updated: 2026-08-04 10:19
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
cifs: fix session state check in reconnect to avoid use-after-free issue
Don't collect exiting session in smb2_reconnect_server(), because it
will be released soon.
Note that the exiting session will stay in server->smb_ses_list until
it complete the cifs_free_ipc() and logoff() and then delete itself
from the list.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/smb/client/smb2pdu.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "7e4f5c3f01fb0e51ca438e43262d858daf9a0a76",
"status": "affected",
"version": "4fcd1813e6404dd4420c7d12fb483f9320f0bf93",
"versionType": "git"
},
{
"lessThan": "759ffc164d95a32c09528766d74d9b4fb054e8f4",
"status": "affected",
"version": "4fcd1813e6404dd4420c7d12fb483f9320f0bf93",
"versionType": "git"
},
{
"lessThan": "99f280700b4cc02d5f141b8d15f8e9fad0418f65",
"status": "affected",
"version": "4fcd1813e6404dd4420c7d12fb483f9320f0bf93",
"versionType": "git"
},
{
"status": "affected",
"version": "655e0c067f0e02ece03fd0591dabe3db2ae27552",
"versionType": "git"
},
{
"status": "affected",
"version": "875cc09c0767a4ac06b57af383709657f98b3ea1",
"versionType": "git"
},
{
"status": "affected",
"version": "599fe1409085059ba12a2c3897c853be9fa9e7cf",
"versionType": "git"
},
{
"status": "affected",
"version": "2e4378ee60049b752c9dce16f62ce6fbd11b379a",
"versionType": "git"
},
{
"status": "affected",
"version": "59b520454b323ec43b2ae757217332cea33091e0",
"versionType": "git"
},
{
"status": "affected",
"version": "e20c888e2b3576e5f498c167729d274ef60b86f8",
"versionType": "git"
},
{
"status": "affected",
"version": "4ce7aa4e44d88ce64ea8ae2337b8910f3670b0ba",
"versionType": "git"
},
{
"status": "affected",
"version": "419fad68e4c4135ff9859e9214dd6cf954413ca1",
"versionType": "git"
},
{
"lessThan": "3.11",
"status": "affected",
"version": "3.10.103",
"versionType": "semver"
},
{
"lessThan": "3.13",
"status": "affected",
"version": "3.12.63",
"versionType": "semver"
},
{
"lessThan": "3.15",
"status": "affected",
"version": "3.14.74",
"versionType": "semver"
},
{
"lessThan": "3.17",
"status": "affected",
"version": "3.16.37",
"versionType": "semver"
},
{
"lessThan": "3.19",
"status": "affected",
"version": "3.18.37",
"versionType": "semver"
},
{
"lessThan": "4.2",
"status": "affected",
"version": "4.1.28",
"versionType": "semver"
},
{
"lessThan": "4.5",
"status": "affected",
"version": "4.4.16",
"versionType": "semver"
},
{
"lessThan": "4.7",
"status": "affected",
"version": "4.6.5",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/smb/client/smb2pdu.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.7"
},
{
"lessThan": "4.7",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.47",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.4.*",
"status": "unaffected",
"version": "6.4.12",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.5",
"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\ncifs: fix session state check in reconnect to avoid use-after-free issue\n\nDon\u0027t collect exiting session in smb2_reconnect_server(), because it\nwill be released soon.\n\nNote that the exiting session will stay in server-\u003esmb_ses_list until\nit complete the cifs_free_ipc() and logoff() and then delete itself\nfrom the list."
}
],
"id": "CVE-2023-53794",
"lastModified": "2026-08-04T10:19:21.410",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
]
},
"published": "2025-12-09T01:16:50.957",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/759ffc164d95a32c09528766d74d9b4fb054e8f4"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/7e4f5c3f01fb0e51ca438e43262d858daf9a0a76"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/99f280700b4cc02d5f141b8d15f8e9fad0418f65"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Deferred"
}
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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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