{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-50284", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T19:36:19.984Z", "datePublished": "2024-11-19T01:30:27.273Z", "dateUpdated": "2026-08-05T11:43:03.668Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:43:03.668Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: Fix the missing xa_store error check\n\nxa_store() can fail, it return xa_err(-EINVAL) if the entry cannot\nbe stored in an XArray, or xa_err(-ENOMEM) if memory allocation failed,\nso check error for xa_store() to fix it." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:N - ksmbd is the in-kernel SMB server listening on TCP/445, and the vulnerable `ksmbd_session_rpc_open()` is driven entirely by a remote client's SMB2_CREATE against the IPC$ share. No local access is needed.\nAC:L - The code path is reached by an ordinary named-pipe open that the attacker issues at will, and the allocation-failure condition is one a remote attacker can drive on the memory-constrained embedded NAS/router platforms where ksmbd is typically deployed, by flooding connections, sessions and large request buffers.\nPR:N - Opening srvsvc/wkssvc/lsarpc on IPC$ is the classic SMB null-session path, and ksmbd's commonly shipped `map to guest = bad user` configuration lets an unauthenticated client obtain a guest session, tree-connect IPC$ and reach `create_smb2_pipe()` without any valid credentials.\nUI:N - The entire sequence (negotiate, session setup, tree connect to IPC$, SMB2_CREATE on a pipe) is initiated by the attacker against a listening server; no action by any local user or administrator is required.\nS:U - The leaked kernel object, the leaked IPC ID and the orphaned RPC handle all remain within the ksmbd server's own security authority; no VM, IOMMU or sandbox boundary is crossed.\nC:N - Nothing is read out of bounds and no kernel data is returned to the client; the client only learns an IDA-allocated small integer handle, which discloses no kernel memory contents or addresses.\nI:N - No memory is corrupted and no file or session data is modified — the ID is simply absent from the XArray, causing subsequent RPC operations on that handle to fail cleanly rather than alter state.\nA:H - Each occurrence permanently leaks a kernel slab object and a global IPC ID, and leaves an RPC pipe open forever in ksmbd.mountd because `ksmbd_session_rpc_close()`/`__session_rpc_close()` can never find the entry, so a remote attacker can repeatedly compound the leak into unrecoverable memory and handle exhaustion that takes the SMB server (and, on small-memory appliances, the system) down." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/smb/server/mgmt/user_session.c" ], "versions": [ { "version": "052b41ef2abe274f068e892aee81406f11bd1f3a", "lessThan": "d8664ce789bd46290c59a00da6897252f92c237d", "status": "affected", "versionType": "git" }, { "version": "b685757c7b08d5073046fb379be965fd6c06aafc", "lessThan": "726c1568b9145fa13ee248df184b186c382a7ff8", "status": "affected", "versionType": "git" }, { "version": "b685757c7b08d5073046fb379be965fd6c06aafc", "lessThan": "c2a232c4f790f4bcd4d218904c56ac7a39a448f5", "status": "affected", "versionType": "git" }, { "version": "b685757c7b08d5073046fb379be965fd6c06aafc", "lessThan": "3abab905b14f4ba756d413f37f1fb02b708eee93", "status": "affected", "versionType": "git" }, { "version": "1f485b54d04a920723984062c912174330a05178", "status": "affected", "versionType": "git" }, { "version": "6.1.71", "lessThan": "6.1.117", "status": "affected", "versionType": "semver" }, { "version": "5.15.145", "lessThan": "5.16", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/smb/server/mgmt/user_session.c" ], "versions": [ { "version": "6.3", "status": "affected" }, { "version": "0", "lessThan": "6.3", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.117", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.61", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11.8", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.71", "versionEndExcluding": "6.1.117" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.6.61" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.11.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.12" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.145" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/d8664ce789bd46290c59a00da6897252f92c237d" }, { "url": "https://git.kernel.org/stable/c/726c1568b9145fa13ee248df184b186c382a7ff8" }, { "url": "https://git.kernel.org/stable/c/c2a232c4f790f4bcd4d218904c56ac7a39a448f5" }, { "url": "https://git.kernel.org/stable/c/3abab905b14f4ba756d413f37f1fb02b708eee93" } ], "title": "ksmbd: Fix the missing xa_store error check", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-50284", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2025-10-01T20:14:37.037019Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-754", "description": "CWE-754 Improper Check for Unusual or Exceptional Conditions" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T20:17:22.095Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T22:28:06.521Z" } } ] } }