186 lines
9.2 KiB
JSON
186 lines
9.2 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2025-71204",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-01-31T11:36:51.194Z",
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"datePublished": "2026-02-14T16:27:03.252Z",
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"dateUpdated": "2026-08-05T12:12:32.645Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T12:12:32.645Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/server: fix refcount leak in parse_durable_handle_context()\n\nWhen the command is a replay operation and -ENOEXEC is returned,\nthe refcount of ksmbd_file must be released."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"baseScore": 7.5,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:N - ksmbd processes SMB2 CREATE requests received remotely over TCP, normally port 445.\nAC:L - The attacker controls the ClientGuid, CreateGuid, and replay flag and can deterministically create a matching handle before sending duplicate DH2Q requests; no race or uncontrollable timing is required.\nPR:N - Although SMB2 CREATE requires a valid session and tree connection, a credential-free guest session on a guest-enabled disk share satisfies these gates in a reasonable deployment.\nUI:N - Exploitation requires only attacker-generated SMB requests and no action by another user.\nS:U - The vulnerability and resulting resource exhaustion remain within the host kernel and ksmbd security authority without crossing a VM, sandbox, or IOMMU boundary.\nC:N - The affected path only leaks a reference to an existing ksmbd_file and performs no out-of-bounds read, use-after-free, or information disclosure.\nI:N - The leaked reference prevents cleanup but provides no memory-write primitive or unauthorized modification; the separate replay-flag use-after-free is not caused by this missing put.\nA:H - Repeated requests can permanently pin global file-table entries, underlying open files, oplocks, and locks while preventing restoration of ksmbd's global file limit. Exhausting that limit denies subsequent SMB file opens across all shares and clients."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/smb/server/smb2pdu.c"
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],
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"versions": [
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{
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"version": "8df4bcdb0a4232192b2445256c39b787d58ef14d",
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"lessThan": "07df5ff4f6490a5c96715b7c562e0b2908422e04",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "c8efcc786146a951091588e5fa7e3c754850cb3c",
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"lessThan": "8a15107c4c031fb19737bf2eb4000f847f1d5e4c",
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"status": "affected",
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"versionType": "git"
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"version": "c8efcc786146a951091588e5fa7e3c754850cb3c",
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"status": "affected",
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"lessThan": "3296c3012a9d9a27e81e34910384e55a6ff3cff0",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "6.6.32",
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"lessThan": "6.6.124",
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"status": "affected",
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"versionType": "semver"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/smb/server/smb2pdu.c"
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],
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"versions": [
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{
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"version": "6.9",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.9",
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"status": "unaffected",
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},
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{
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"version": "6.6.124",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.70",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.10",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.19",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.6.32",
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"versionEndExcluding": "6.6.124"
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"vulnerable": true,
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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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"references": [
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{
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"url": "https://git.kernel.org/stable/c/07df5ff4f6490a5c96715b7c562e0b2908422e04"
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},
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{
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"url": "https://git.kernel.org/stable/c/8a15107c4c031fb19737bf2eb4000f847f1d5e4c"
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},
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{
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"url": "https://git.kernel.org/stable/c/70dd3513ed6ac8c6cab23f72c5b19f44ca89de9d"
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},
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{
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"url": "https://git.kernel.org/stable/c/3296c3012a9d9a27e81e34910384e55a6ff3cff0"
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}
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],
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"title": "smb/server: fix refcount leak in parse_durable_handle_context()",
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