{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2026-100071","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2026-09-25T14:17:13.567","lastModified":"2026-10-21T18:46:22.190","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"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."}],"affected":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","affectedData":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["net/hsr/hsr_device.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8","lessThan":"e691eee886871b933d772ffc76d66c80b4c0a25e","versionType":"git","status":"affected"},{"version":"81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8","lessThan":"0a340ffd96943a49a78e367efac9517ca767d99b","versionType":"git","status":"affected"},{"version":"81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8","lessThan":"f7289e3492f2694dccd3d79287e0e31879b58650","versionType":"git","status":"affected"},{"version":"81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8","lessThan":"65702339b3e9fd792f65d4b740928798194d86ce","versionType":"git","status":"affected"},{"version":"81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8","lessThan":"49b01f2939abc676a6f9a118f07a10110ee5f683","versionType":"git","status":"affected"},{"version":"81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8","lessThan":"7f16289b91eb316f170a6bd22d32e6c632f6a5b6","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/hsr/hsr_device.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"3.17","status":"affected"},{"version":"0","lessThan":"3.17","versionType":"semver","status":"unaffected"},{"version":"6.1.188","lessThanOrEqual":"6.1.*","versionType":"semver","status":"unaffected"},{"version":"6.6.157","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.110","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.52","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.2.6","lessThanOrEqual":"7.2.*","versionType":"semver","status":"unaffected"},{"version":"7.3","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-noinfo"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"6.1.188","matchCriteriaId":"BAD8B9E5-FB60-4CC8-A263-40085BAD7E90"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.157","matchCriteriaId":"F5E6592C-4D9C-4D99-B17A-777E25A031F5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.110","matchCriteriaId":"A19EC695-B7E1-41E5-B0EA-E331EFDA98A9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18.52","matchCriteriaId":"0457F732-0EA6-47D3-A69C-17A43B435D23"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.2.6","matchCriteriaId":"BAFE7055-A65A-44F4-BD4B-BF067EAE17F3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0a340ffd96943a49a78e367efac9517ca767d99b","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/49b01f2939abc676a6f9a118f07a10110ee5f683","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/65702339b3e9fd792f65d4b740928798194d86ce","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/7f16289b91eb316f170a6bd22d32e6c632f6a5b6","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/e691eee886871b933d772ffc76d66c80b4c0a25e","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/f7289e3492f2694dccd3d79287e0e31879b58650","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]}]}}