CVE-2023-4515 (GCVE-0-2023-4515)
Vulnerability from cvelistv5
Published
2025-08-16 13:25
Modified
2025-08-16 13:25
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: validate command request size
In commit 2b9b8f3b68ed ("ksmbd: validate command payload size"), except
for SMB2_OPLOCK_BREAK_HE command, the request size of other commands
is not checked, it's not expected. Fix it by add check for request
size of other commands.
References
Impacted products
{ "containers": { "cna": { "affected": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "fs/smb/server/smb2misc.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "595679098bdcdbfbba91ebe07a2f7f208df93870", "status": "affected", "version": "35f450f54dca1519bb24faacd0428db09f89a11f", "versionType": "git" }, { "lessThan": "c6bef3bc30fd4a175aef846b7d928a6c40d091cd", "status": "affected", "version": "9650cf70ec9d94ff34daa088b643229231723c26", "versionType": "git" }, { "lessThan": "ff7236b66d69582f90cf5616e63cfc3dc18142bb", "status": "affected", "version": "2b9b8f3b68edb3d67d79962f02e26dbb5ae3808d", "versionType": "git" }, { "lessThan": "5aa4fda5aa9c2a5a7bac67b4a12b089ab81fee3c", "status": "affected", "version": "2b9b8f3b68edb3d67d79962f02e26dbb5ae3808d", "versionType": "git" }, { "status": "affected", "version": "768caf4019f0391c0b6452afe34cea1704133f7b", "versionType": "git" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "fs/smb/server/smb2misc.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "6.4" }, { "lessThan": "6.4", "status": "unaffected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.127", "versionType": "semver" }, { "lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.46", "versionType": "semver" }, { "lessThanOrEqual": "6.4.*", "status": "unaffected", "version": "6.4.11", "versionType": "semver" }, { "lessThanOrEqual": "*", "status": "unaffected", "version": "6.5", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.15.127", "versionStartIncluding": "5.15.121", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.1.46", "versionStartIncluding": "6.1.36", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.4.11", "versionStartIncluding": "6.4", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.5", "versionStartIncluding": "6.4", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3.10", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: validate command request size\n\nIn commit 2b9b8f3b68ed (\"ksmbd: validate command payload size\"), except\nfor SMB2_OPLOCK_BREAK_HE command, the request size of other commands\nis not checked, it\u0027s not expected. Fix it by add check for request\nsize of other commands." } ], "providerMetadata": { "dateUpdated": "2025-08-16T13:25:50.562Z", "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux" }, "references": [ { "url": "https://git.kernel.org/stable/c/595679098bdcdbfbba91ebe07a2f7f208df93870" }, { "url": "https://git.kernel.org/stable/c/c6bef3bc30fd4a175aef846b7d928a6c40d091cd" }, { "url": "https://git.kernel.org/stable/c/ff7236b66d69582f90cf5616e63cfc3dc18142bb" }, { "url": "https://git.kernel.org/stable/c/5aa4fda5aa9c2a5a7bac67b4a12b089ab81fee3c" } ], "title": "ksmbd: validate command request size", "x_generator": { "engine": "bippy-1.2.0" } } }, "cveMetadata": { "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "assignerShortName": "Linux", "cveId": "CVE-2023-4515", "datePublished": "2025-08-16T13:25:50.562Z", "dateReserved": "2023-08-24T10:34:48.702Z", "dateUpdated": "2025-08-16T13:25:50.562Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "vulnerability-lookup:meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2023-4515\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-08-16T14:15:27.780\",\"lastModified\":\"2025-08-16T14:15:27.780\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nksmbd: validate command request size\\n\\nIn commit 2b9b8f3b68ed (\\\"ksmbd: validate command payload size\\\"), except\\nfor SMB2_OPLOCK_BREAK_HE command, the request size of other commands\\nis not checked, it\u0027s not expected. Fix it by add check for request\\nsize of other commands.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/595679098bdcdbfbba91ebe07a2f7f208df93870\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5aa4fda5aa9c2a5a7bac67b4a12b089ab81fee3c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c6bef3bc30fd4a175aef846b7d928a6c40d091cd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ff7236b66d69582f90cf5616e63cfc3dc18142bb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}" } }
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Sightings
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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