446 lines
21 KiB
JSON
446 lines
21 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-2025-68349",
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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": "2025-12-16T14:48:05.300Z",
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"datePublished": "2025-12-24T10:32:41.253Z",
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"dateUpdated": "2026-11-10T12:38:10.213Z"
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},
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"containers": {
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"cna": {
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T12:10:59.666Z"
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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\nNFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid\n\nFixes a crash when layout is null during this call stack:\n\nwrite_inode\n -> nfs4_write_inode\n -> pnfs_layoutcommit_inode\n\npnfs_set_layoutcommit relies on the lseg refcount to keep the layout\naround. Need to clear NFS_INO_LAYOUTCOMMIT otherwise we might attempt\nto reference a null layout."
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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 - The NFSv4.1+ pNFS client state is driven by network replies from its metadata and data servers; a malicious or compromised pNFS server can return layout-state errors that lead to the client crash.\nAC:L - The server controls layout ranges, data-server replies, and stateid-error timing, allowing it to establish a pending layoutcommit and then invalidate the last layout segment without relying on an uncontrollable race.\nPR:N - The attacker needs no account or capability on the client; CAP_SYS_ADMIN is required only for the victim's initial NFS mount, and ordinary deployments may use unauthenticated AUTH_SYS server communication.\nUI:N - In a pre-mounted pNFS or NFS-root deployment, automated writes and kernel writeback can complete the trigger sequence without human action at exploitation time.\nS:U - The resulting failure affects the NFS client kernel within its existing security authority and does not cross a virtualization, sandbox, or IOMMU boundary.\nC:N - The stale flag causes a direct NULL dereference of the absent layout rather than an out-of-bounds read, use-after-free access, or information-disclosure primitive.\nI:N - The defect does not provide an attacker-controlled write or corrupt adjacent memory; execution faults while attempting to traverse the layout segment list through a NULL layout pointer.\nA:H - The NULL dereference occurs in kernel writeback and can produce an oops or panic, taking the client system or critical kernel functionality out of service."
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}
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]
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},
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"version": "6.18.2",
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}
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"title": "NFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid",
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"timestamp": "2026-06-16T19:27:27.700810Z",
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"id": "CVE-2025-68349",
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"options": [
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