286 lines
14 KiB
JSON
286 lines
14 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-2024-35998",
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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": "2024-05-17T13:50:33.148Z",
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"datePublished": "2024-05-20T09:48:01.009Z",
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"dateUpdated": "2026-08-05T11:31:29.368Z"
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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": "2026-08-05T11:31:29.368Z"
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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\nsmb3: fix lock ordering potential deadlock in cifs_sync_mid_result\n\nCoverity spotted that the cifs_sync_mid_result function could deadlock\n\n\"Thread deadlock (ORDER_REVERSAL) lock_order: Calling spin_lock acquires\nlock TCP_Server_Info.srv_lock while holding lock TCP_Server_Info.mid_lock\"\n\nAddresses-Coverity: 1590401 (\"Thread deadlock (ORDER_REVERSAL)\")"
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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 - Both halves of the lock-order reversal are driven by SMB3 response frames received from the remote server — `smb2_decrypt_offload()` runs on server-supplied encrypted read payloads, and the mid states examined in `cifs_sync_mid_result()` are set solely by response parsing (`dequeue_mid()`, `handle_read_data()`). A malicious, compromised, or MITM'd SMB server reaches the code purely over the network, matching this CNA's AV:N treatment of other cifs-client bugs (CVE-2024-39468, CVE-2024-42256).\nAC:L - The remote server controls both sides of the race — it chooses response size, encryption, timing, and error status, so it can drive `smb2_decrypt_offload()` into its `srv_lock`→`mid_lock` branch on one CPU while forcing an unexpected mid state into `cifs_sync_mid_result()`'s `mid_lock`→`srv_lock` path on another, and it can repeat this indefinitely. Where the attacker creates the race, AC is Low.\nPR:N - The attacker is the remote SMB peer (or a network attacker able to spoof/hijack the SMB connection); no account, credential, or local privilege on the victim host is required to send the responses that trigger the deadlock.\nUI:N - Exploitation needs no victim action — the CIFS share is already mounted as a normal deployment condition (fstab/automount), and ordinary background I/O supplies the requests whose responses the attacker manipulates.\nS:U - The deadlock is confined to the kernel of the affected client machine; no VM, IOMMU, or sandbox boundary is crossed.\nC:N - The bug is purely a lock acquisition-order violation — no memory is read out of bounds, no freed object is accessed, and no data is disclosed.\nI:N - No memory corruption, out-of-bounds write, or data modification occurs; the flaw only affects the order in which two spinlocks are taken.\nA:H - An ABBA deadlock on `srv_lock`/`mid_lock` permanently wedges two CPUs spinning with preemption disabled while holding both locks, hanging all CIFS I/O and every subsequent taker of either lock, resulting in a hard lockup/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/transport.c"
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],
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{
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"version": "64d62ac6d6514cba1305bd08e271ec1843bdd612",
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"lessThan": "6.3",
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"status": "affected",
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},
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{
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"version": "6.3.2",
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"lessThan": "6.4",
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"product": "Linux",
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"defaultStatus": "affected",
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"fs/smb/client/transport.c"
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],
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{
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"version": "0",
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"status": "unaffected",
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},
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"version": "6.8.9",
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"lessThanOrEqual": "6.8.*",
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"status": "unaffected",
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"version": "6.9",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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"id": "CVE-2024-35998",
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