{"id":"CVE-2024-46682","revision":"b934220fcdf447418f3e3867348157aa","records":[{"revision":"b934220fcdf447418f3e3867348157aa","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-46682","aliases":[],"title":"nfsd: prevent panic for nfsv4.0 closed files in nfs4_show_open","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: prevent panic for nfsv4.0 closed files in nfs4_show_open\n\nPrior to commit 3f29cc82a84c (\"nfsd: split sc_status out of\nsc_type\") states_show() relied on sc_type field to be of valid\ntype before calling into a subfunction to show content of a\nparticular stateid. From that commit, we split the validity of\nthe stateid into sc_status and no longer changed sc_type to 0\nwhile unhashing the stateid. This resulted in kernel oopsing\nfor nfsv4.0 opens that stay around and in nfs4_show_open()\nwould derefence sc_file which was NULL.\n\nInstead, for closed open stateids forgo displaying information\nthat relies of having a valid sc_file.\n\nTo reproduce: mount the server with 4.0, read and close\na file and then on the server cat /proc/fs/nfsd/clients/2/states\n\n[  513.590804] Call trace:\n[  513.590925]  _raw_spin_lock+0xcc/0x160\n[  513.591119]  nfs4_show_open+0x78/0x2c0 [nfsd]\n[  513.591412]  states_show+0x44c/0x488 [nfsd]\n[  513.591681]  seq_read_iter+0x5d8/0x760\n[  513.591896]  seq_read+0x188/0x208\n[  513.592075]  vfs_read+0x148/0x470\n[  513.592241]  ksys_read+0xcc/0x178","state":0,"publishedAt":"2024-09-13T05:29:15.294+00:00","modifiedAt":"2026-10-21T12:35:12.132+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/nfsd/nfs4state.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3f29cc82a84c23cfd12b903029dd26002ca825f5\",\n                            \"lessThan\": \"ba0b697de298285301c71c258598226e06494236\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3f29cc82a84c23cfd12b903029dd26002ca825f5\",\n                            \"lessThan\": \"a204501e1743d695ca2930ed25a2be9f8ced96d3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"172d038b7c4d3cfa9fc5ac210577c5c4f8256320\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThan\": \"6.7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/nfsd/nfs4state.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.9\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.9\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.10.8\",\n                            \"lessThanOrEqual\": \"6.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.11\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/ba0b697de298285301c71c258598226e06494236","https://git.kernel.org/stable/c/a204501e1743d695ca2930ed25a2be9f8ced96d3"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-46682","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-46682","identifiers":["CVE-2024-46682"]},"retained":false,"historicalAffected":[]}],"coverage":[]}