{"id":"CVE-2026-100071","revision":"32150c054f5f485c8b14ac5f692191ae","records":[{"revision":"32150c054f5f485c8b14ac5f692191ae","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-100071","aliases":[],"title":"net: hsr: free learned nodes on device setup failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hsr: free learned nodes on device setup failure\n\nhsr_dev_finalize() can fail after a lower-device RX handler has\nalready been registered (slave A is added before the failable slave B\nand interlink adds). RX handlers run in softirq regardless of the\nmaster's state, so frames received in that window can learn dynamic\nnodes into node_db, and the error unwind never releases them.\n\nFree both owned dynamic databases in the unwind, mirroring\nhsr_dellink(). proxy_node_db is provably empty on every current error\nexit (only interlink RX feeds it, and the interlink add is the last\nfailable step) and is freed for symmetry. The order is safe:\nhsr_del_port() unregisters each RX handler with synchronize_net()\nbefore hsr_del_nodes() runs, which removes remaining entries with\nlist_del_rcu() and defers their release with call_rcu() for readers\nalready under RCU.","state":0,"publishedAt":"2026-09-25T13:06:44.956+00:00","modifiedAt":"2026-10-19T08:43:03.4+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                        \"net/hsr/hsr_device.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8\",\n                            \"lessThan\": \"e691eee886871b933d772ffc76d66c80b4c0a25e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8\",\n                            \"lessThan\": \"0a340ffd96943a49a78e367efac9517ca767d99b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8\",\n                            \"lessThan\": \"f7289e3492f2694dccd3d79287e0e31879b58650\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8\",\n                            \"lessThan\": \"65702339b3e9fd792f65d4b740928798194d86ce\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8\",\n                            \"lessThan\": \"49b01f2939abc676a6f9a118f07a10110ee5f683\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8\",\n                            \"lessThan\": \"7f16289b91eb316f170a6bd22d32e6c632f6a5b6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\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                        \"net/hsr/hsr_device.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.17\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.17\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/e691eee886871b933d772ffc76d66c80b4c0a25e","https://git.kernel.org/stable/c/0a340ffd96943a49a78e367efac9517ca767d99b","https://git.kernel.org/stable/c/f7289e3492f2694dccd3d79287e0e31879b58650","https://git.kernel.org/stable/c/65702339b3e9fd792f65d4b740928798194d86ce","https://git.kernel.org/stable/c/49b01f2939abc676a6f9a118f07a10110ee5f683","https://git.kernel.org/stable/c/7f16289b91eb316f170a6bd22d32e6c632f6a5b6"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-100071","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-100071","identifiers":["CVE-2026-100071"]},"retained":false,"historicalAffected":[]}],"coverage":[]}