{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-23T17:22:13.119","vulnerabilities":[{"cve":{"id":"CVE-2022-48931","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-08-22T04:15:16.010","lastModified":"2024-08-23T01:54:11.640","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nconfigfs: fix a race in configfs_{,un}register_subsystem()\n\nWhen configfs_register_subsystem() or configfs_unregister_subsystem()\nis executing link_group() or unlink_group(),\nit is possible that two processes add or delete list concurrently.\nSome unfortunate interleavings of them can cause kernel panic.\n\nOne of cases is:\nA --> B --> C --> D\nA <-- B <-- C <-- D\n\n delete list_head *B | delete list_head *C\n--------------------------------|-----------------------------------\nconfigfs_unregister_subsystem | configfs_unregister_subsystem\n unlink_group | unlink_group\n unlink_obj | unlink_obj\n list_del_init | list_del_init\n __list_del_entry | __list_del_entry\n __list_del | __list_del\n // next == C |\n next->prev = prev |\n | next->prev = prev\n prev->next = next |\n | // prev == B\n | prev->next = next\n\nFix this by adding mutex when calling link_group() or unlink_group(),\nbut parent configfs_subsystem is NULL when config_item is root.\nSo I create a mutex configfs_subsystem_mutex."},{"lang":"es","value":"En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: configfs: arregla una ejecución en configfs_{,un}register_subsystem() Cuando configfs_register_subsystem() o configfs_unregister_subsystem() está ejecutando link_group() o unlink_group(), es posible que dos procesos agregar o eliminar la lista al mismo tiempo. Algunas intercalaciones desafortunadas de ellos pueden causar pánico en el kernel. Uno de los casos es: A --> B --> C --> DA <-- B <-- C <-- D eliminar list_head *B | eliminar list_head *C --------------------------------|------------- ---------------------- configfs_unregister_subsystem | configfs_unregister_subsystem unlink_group | desvincular_grupo desvincular_obj | unlink_obj list_del_init | list_del_init __list_del_entry | __list_del_entry __list_del | __list_del // siguiente == C | siguiente->anterior = anterior | | siguiente->anterior = anterior anterior->siguiente = siguiente | | // anterior == B | prev->next = next Solucione esto agregando mutex al llamar a link_group() o unlink_group(), pero el configfs_subsystem principal es NULL cuando config_item es root. Entonces creo un mutex configfs_subsystem_mutex."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":4.7,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.0,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-362"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.16","versionEndExcluding":"4.9.304","matchCriteriaId":"21912390-FBA5-4A90-B649-77DB55849C77"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"4.14.269","matchCriteriaId":"F0F577D3-EFEA-42CF-80AA-905297529D7F"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"4.19.232","matchCriteriaId":"EF11C6DC-8B9A-4A37-B1E6-33B68F5366ED"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.4.182","matchCriteriaId":"EE74CED8-43BF-4060-9578-93A09735B4E2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.103","matchCriteriaId":"1A95B717-3110-4D4F-B8FC-373919BB514D"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.26","matchCriteriaId":"9AB342AE-A62E-4947-A6EA-511453062B2B"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"5.16.12","matchCriteriaId":"C76BAB21-7F23-4AD8-A25F-CA7B262A2698"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/3aadfd46858b1f64d4d6a0654b863e21aabff975","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/40805099af11f68c5ca7dbcfacf455da8f99f622","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/84ec758fb2daa236026506868c8796b0500c047d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/a37024f7757c25550accdebf49e497ad6ae239fe","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/a7ab53d3c27dfe83bb594456b9f38a37796ec39b","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/b7e2b91fcb5c78c414e33dc8d50642e307ca0c5a","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/d1654de19d42f513b6cfe955cc77e7f427e05a77","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/e7a66dd2687758718eddd79b542a95cf3aa488cc","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]}]}}]}