199 lines
10 KiB
JSON
199 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-2024-46736",
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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": "2024-09-11T15:12:18.257Z",
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"datePublished": "2024-09-18T07:11:58.499Z",
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"dateUpdated": "2026-08-05T11:38:12.776Z"
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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": "2026-08-05T11:38:12.776Z"
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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: client: fix double put of @cfile in smb2_rename_path()\n\nIf smb2_set_path_attr() is called with a valid @cfile and returned\n-EINVAL, we need to call cifs_get_writable_path() again as the\nreference of @cfile was already dropped by previous smb2_compound_op()\ncall."
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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:H/I:H/A:H",
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"baseScore": 9.8,
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"baseSeverity": "CRITICAL"
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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 vulnerable retry path in smb2_rename_path() is entered only when compound_send_recv() maps the server's STATUS_INVALID_PARAMETER response to -EINVAL, so a malicious/compromised SMB server or a network MITM (the Linux cifs client does not mandate signing/encryption) fully controls whether the double put occurs. This is remote-peer data driving kernel memory management on the client.\nAC:L - The server simply answers a compounded CREATE+SET_INFO(rename) with STATUS_INVALID_PARAMETER — deterministic, no race to win, no memory-layout guessing, and leases are enabled by default. The same condition even arises reliably against benign servers for hardlinked files, which is precisely the case the introducing commit describes.\nPR:N - The attacker is the remote SMB endpoint and needs no account, credentials, or privileges on the victim client; the client initiates and authenticates the connection itself and then processes the poisoned status code during a routine rename of an open file.\nUI:N - No human action is required — renames of files held open on an SMB mount are ordinary automated activity (backup/sync daemons, log rotation, package and build tooling), so the attacker-controlled server merely waits for one and replies with STATUS_INVALID_PARAMETER.\nS:U - The corruption is confined to the client kernel's own heap and security authority; no VM, hypervisor, or IOMMU boundary is crossed.\nC:H - The premature free leaves file->private_data dangling and smb2_compound_op() kstrdup()s cfile->symlink_target out of freed memory into data returned to userspace, and a reclaimed cifsFileInfo yields a general arbitrary kernel-heap read primitive.\nI:H - The freed cifsFileInfo contains three list_heads whose later list_del gives an arbitrary write, plus four work_struct/delayed_work members with func pointers that can be queued after slab reclaim for control-flow hijack, making this a full write/code-execution primitive.\nA:H - The refcount underflow frees the handle while the fd remains open, so the next read/write or close on that fd hits freed memory, causing list corruption, a double free, and a kernel oops/panic."
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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/client/smb2inode.c"
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],
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"versions": [
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{
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"version": "1e60bc0e954389af82f1d9a85f13a63f6572350f",
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"lessThan": "b27ea9c96efd2c252a981fb00d0f001b86c90f3e",
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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": "71f15c90e785d1de4bcd65a279e7256684c25c0d",
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"lessThan": "1a46c7f6546b73cbf36f5a618a1a6bbb45391eb3",
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"status": "affected",
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{
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"lessThan": "3523a3df03c6f04f7ea9c2e7050102657e331a4f",
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"status": "affected",
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},
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{
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"version": "6.6.32",
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"lessThan": "6.6.51",
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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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"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/client/smb2inode.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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"versionType": "semver"
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},
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{
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"version": "6.6.51",
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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": "6.10.10",
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"lessThanOrEqual": "6.10.*",
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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": "6.11",
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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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{
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"nodes": [
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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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": "6.6.51"
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},
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{
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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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"references": [
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{
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"url": "https://git.kernel.org/stable/c/b27ea9c96efd2c252a981fb00d0f001b86c90f3e"
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},
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{
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"url": "https://git.kernel.org/stable/c/1a46c7f6546b73cbf36f5a618a1a6bbb45391eb3"
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},
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{
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"url": "https://git.kernel.org/stable/c/3523a3df03c6f04f7ea9c2e7050102657e331a4f"
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}
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],
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"title": "smb: client: fix double put of @cfile in smb2_rename_path()",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2024-09-29T14:52:47.842995Z",
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"id": "CVE-2024-46736",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-09-29T14:53:02.091Z"
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}
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}
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]
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}
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} |