{"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"}}]}}