{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-50121", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T19:36:19.953Z", "datePublished": "2024-11-05T17:10:50.523Z", "dateUpdated": "2026-05-23T15:54:33.160Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T15:54:33.160Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: cancel nfsd_shrinker_work using sync mode in nfs4_state_shutdown_net\n\nIn the normal case, when we excute `echo 0 > /proc/fs/nfsd/threads`, the\nfunction `nfs4_state_destroy_net` in `nfs4_state_shutdown_net` will\nrelease all resources related to the hashed `nfs4_client`. If the\n`nfsd_client_shrinker` is running concurrently, the `expire_client`\nfunction will first unhash this client and then destroy it. This can\nlead to the following warning. Additionally, numerous use-after-free\nerrors may occur as well.\n\nnfsd_client_shrinker echo 0 > /proc/fs/nfsd/threads\n\nexpire_client nfsd_shutdown_net\n unhash_client ...\n nfs4_state_shutdown_net\n /* won't wait shrinker exit */\n /* cancel_work(&nn->nfsd_shrinker_work)\n * nfsd_file for this /* won't destroy unhashed client1 */\n * client1 still alive nfs4_state_destroy_net\n */\n\n nfsd_file_cache_shutdown\n /* trigger warning */\n kmem_cache_destroy(nfsd_file_slab)\n kmem_cache_destroy(nfsd_file_mark_slab)\n /* release nfsd_file and mark */\n __destroy_client\n\n====================================================================\nBUG nfsd_file (Not tainted): Objects remaining in nfsd_file on\n__kmem_cache_shutdown()\n--------------------------------------------------------------------\nCPU: 4 UID: 0 PID: 764 Comm: sh Not tainted 6.12.0-rc3+ #1\n\n dump_stack_lvl+0x53/0x70\n slab_err+0xb0/0xf0\n __kmem_cache_shutdown+0x15c/0x310\n kmem_cache_destroy+0x66/0x160\n nfsd_file_cache_shutdown+0xac/0x210 [nfsd]\n nfsd_destroy_serv+0x251/0x2a0 [nfsd]\n nfsd_svc+0x125/0x1e0 [nfsd]\n write_threads+0x16a/0x2a0 [nfsd]\n nfsctl_transaction_write+0x74/0xa0 [nfsd]\n vfs_write+0x1a5/0x6d0\n ksys_write+0xc1/0x160\n do_syscall_64+0x5f/0x170\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\n====================================================================\nBUG nfsd_file_mark (Tainted: G B W ): Objects remaining\nnfsd_file_mark on __kmem_cache_shutdown()\n--------------------------------------------------------------------\n\n dump_stack_lvl+0x53/0x70\n slab_err+0xb0/0xf0\n __kmem_cache_shutdown+0x15c/0x310\n kmem_cache_destroy+0x66/0x160\n nfsd_file_cache_shutdown+0xc8/0x210 [nfsd]\n nfsd_destroy_serv+0x251/0x2a0 [nfsd]\n nfsd_svc+0x125/0x1e0 [nfsd]\n write_threads+0x16a/0x2a0 [nfsd]\n nfsctl_transaction_write+0x74/0xa0 [nfsd]\n vfs_write+0x1a5/0x6d0\n ksys_write+0xc1/0x160\n do_syscall_64+0x5f/0x170\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nTo resolve this issue, cancel `nfsd_shrinker_work` using synchronous\nmode in nfs4_state_shutdown_net." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/nfsd/nfs4state.c" ], "versions": [ { "version": "2bbf10861d51dae76c6da7113516d0071c782653", "lessThan": "f67138dd338cb564ade7d3755c8cd4f68b46d397", "status": "affected", "versionType": "git" }, { "version": "958294a3eb82026fcfff20b0287a90e9c854785e", "lessThan": "5ade4382de16c34d9259cb548f36ec5c4555913c", "status": "affected", "versionType": "git" }, { "version": "f3ea5ec83d1a827f074b2b660749817e0bf2b23e", "lessThan": "36775f42e039b01d4abe8998bf66771a37d3cdcc", "status": "affected", "versionType": "git" }, { "version": "7c24fa225081f31bc6da6a355c1ba801889ab29a", "lessThan": "f965dc0f099a54fca100acf6909abe52d0c85328", "status": "affected", "versionType": "git" }, { "version": "7c24fa225081f31bc6da6a355c1ba801889ab29a", "lessThan": "add1df5eba163a3a6ece11cb85890e2e410baaea", "status": "affected", "versionType": "git" }, { "version": "7c24fa225081f31bc6da6a355c1ba801889ab29a", "lessThan": "d5ff2fb2e7167e9483846e34148e60c0c016a1f6", "status": "affected", "versionType": "git" }, { "version": "5.10.220", "lessThan": "5.10.233", "status": "affected", "versionType": "semver" }, { "version": "5.15.154", "lessThan": "5.15.176", "status": "affected", "versionType": "semver" }, { "version": "6.1.81", "lessThan": "6.1.123", "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/nfsd/nfs4state.c" ], "versions": [ { "version": "6.2", "status": "affected" }, { "version": "0", "lessThan": "6.2", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.233", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.176", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.123", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.59", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11.6", "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": "5.10.220", "versionEndExcluding": "5.10.233" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.154", "versionEndExcluding": "5.15.176" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.81", "versionEndExcluding": "6.1.123" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.6.59" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.11.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.12" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/f67138dd338cb564ade7d3755c8cd4f68b46d397" }, { "url": "https://git.kernel.org/stable/c/5ade4382de16c34d9259cb548f36ec5c4555913c" }, { "url": "https://git.kernel.org/stable/c/36775f42e039b01d4abe8998bf66771a37d3cdcc" }, { "url": "https://git.kernel.org/stable/c/f965dc0f099a54fca100acf6909abe52d0c85328" }, { "url": "https://git.kernel.org/stable/c/add1df5eba163a3a6ece11cb85890e2e410baaea" }, { "url": "https://git.kernel.org/stable/c/d5ff2fb2e7167e9483846e34148e60c0c016a1f6" } ], "title": "nfsd: cancel nfsd_shrinker_work using sync mode in nfs4_state_shutdown_net", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-50121", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2024-12-11T14:48:54.353206Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-12-11T14:58:33.921Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T20:43:43.437Z" } }, { "x_adpType": "supplier", "providerMetadata": { "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-05-12T12:00:15.174Z" }, "affected": [ { "vendor": "Siemens", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "versions": [ { "status": "affected", "version": "0", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" } ], "references": [ { "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html" } ] } ] } }