201 lines
10 KiB
JSON
201 lines
10 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-2025-22043",
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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": "2024-12-29T08:45:45.810Z",
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"datePublished": "2025-04-16T14:12:04.558Z",
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"dateUpdated": "2026-08-05T11:56:16.436Z"
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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": "2026-08-05T11:56:16.436Z"
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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\nksmbd: add bounds check for durable handle context\n\nAdd missing bounds check for durable handle context."
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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:L/UI:N/S:U/C:H/I:N/A:H",
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"baseScore": 8.1,
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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 is the in-kernel SMB server listening on TCP/445; the malformed SMB2 CREATE request with a crafted durable-handle create context is delivered entirely over the network by a remote peer.\nAC:L - The attacker fully controls the create-context DataOffset/DataLength and struct layout in the request; the undersized context reliably triggers the out-of-bounds read with no uncontrolled preconditions.\nPR:L - SMB2_CREATE is only dispatched after a valid authenticated session (smb2_check_user_session) and tree connect exist, so the attacker needs valid (even low-privilege/guest) SMB credentials — this is post-authentication, not a handshake path.\nUI:N - The attacker triggers the flaw purely by sending a crafted create request; no action by any local user or victim is required.\nS:U - The out-of-bounds read stays within the kernel's own memory and security authority; no boundary such as a VM/hypervisor or IOMMU is crossed.\nC:H - The bug reads tens of bytes of adjacent kernel heap memory beyond the request buffer (well past \"a few bytes\"), which per kernel OOB-read guidance is High confidentiality impact.\nI:N - The defect is strictly a read; it provides no memory-write or corruption primitive, and the OOB-sourced file id/GUID values cannot be steered to a controlled durable-handle takeover.\nA:H - The out-of-bounds read can dereference an unmapped/guard page (kvmalloc/vmalloc-backed buffers) or trip KASAN, producing a kernel oops/panic and denial of service."
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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": "0626e6641f6b467447c81dd7678a69c66f7746cf",
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"lessThan": "8d4848c45943c9cf5e86142fd7347efa97f497db",
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"status": "affected",
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{
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"version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
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"lessThan": "29b946714d6aa77de54c71243bba39469ac43ef2",
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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": "0626e6641f6b467447c81dd7678a69c66f7746cf",
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"lessThan": "1107b9ed92194603593c51829a3887812ae9e806",
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"status": "affected",
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"versionType": "git"
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{
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"version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
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"lessThan": "f0db3d9d416e332a0d6f045a1509539d3a4cd898",
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"status": "affected",
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},
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{
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"version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
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"lessThan": "542027e123fc0bfd61dd59e21ae0ee4ef2101b29",
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"status": "affected",
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"versionType": "git"
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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": "5.15",
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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": "5.15",
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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": "6.6.87",
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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": "6.12.23",
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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": "6.13.11",
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"lessThanOrEqual": "6.13.*",
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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": "6.14.2",
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"lessThanOrEqual": "6.14.*",
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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": "6.15",
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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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"versionStartIncluding": "5.15",
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"versionEndExcluding": "6.6.87"
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/8d4848c45943c9cf5e86142fd7347efa97f497db"
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{
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"url": "https://git.kernel.org/stable/c/29b946714d6aa77de54c71243bba39469ac43ef2"
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{
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"url": "https://git.kernel.org/stable/c/1107b9ed92194603593c51829a3887812ae9e806"
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},
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{
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"url": "https://git.kernel.org/stable/c/f0db3d9d416e332a0d6f045a1509539d3a4cd898"
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},
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{
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"url": "https://git.kernel.org/stable/c/542027e123fc0bfd61dd59e21ae0ee4ef2101b29"
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}
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],
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"title": "ksmbd: add bounds check for durable handle context",
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