{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-22T00:04:11.791","vulnerabilities":[{"cve":{"id":"CVE-2022-49195","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2025-02-26T07:00:56.580","lastModified":"2025-09-23T13:44:29.413","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: fix panic on shutdown if multi-chip tree failed to probe\n\nDSA probing is atypical because a tree of devices must probe all at\nonce, so out of N switches which call dsa_tree_setup_routing_table()\nduring probe, for (N - 1) of them, \"complete\" will return false and they\nwill exit probing early. The Nth switch will set up the whole tree on\ntheir behalf.\n\nThe implication is that for (N - 1) switches, the driver binds to the\ndevice successfully, without doing anything. When the driver is bound,\nthe ->shutdown() method may run. But if the Nth switch has failed to\ninitialize the tree, there is nothing to do for the (N - 1) driver\ninstances, since the slave devices have not been created, etc. Moreover,\ndsa_switch_shutdown() expects that the calling @ds has been in fact\ninitialized, so it jumps at dereferencing the various data structures,\nwhich is incorrect.\n\nAvoid the ensuing NULL pointer dereferences by simply checking whether\nthe Nth switch has previously set \"ds->setup = true\" for the switch\nwhich is currently shutting down. The entire setup is serialized under\ndsa2_mutex which we already hold."},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: dsa: fix panic on shutting if multi-chip tree failed to probe El sondeo de DSA es atípico porque un árbol de dispositivos debe sondear todos a la vez, por lo que de N switches que llaman a dsa_tree_setup_routing_table() durante el sondeo, para (N - 1) de ellos, \"complete\" devolverá false y saldrán del sondeo antes de tiempo. El Nth switch configurará todo el árbol en su nombre. La implicación es que para (N - 1) switches, el controlador se vincula al dispositivo con éxito, sin hacer nada. Cuando el controlador está vinculado, el método ->shutdown() puede ejecutarse. Pero si el Nth switch no ha podido inicializar el árbol, no hay nada que hacer para las (N - 1) instancias del controlador, ya que los dispositivos esclavos no se han creado, etc. Además, dsa_switch_shutdown() espera que el @ds que llama se haya inicializado de hecho, por lo que salta a desreferenciar las diversas estructuras de datos, lo cual es incorrecto. Evite las desreferencias de puntero NULL resultantes simplemente verificando si el conmutador Nth ha establecido previamente \"ds->setup = true\" para el conmutador que se está apagando actualmente. La configuración completa está serializada bajo dsa2_mutex que ya tenemos."}],"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":"CWE-476"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.1","versionEndExcluding":"5.15.33","matchCriteriaId":"4D9EC10D-B839-4DFA-AD2C-E2032832E49F"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"5.16.19","matchCriteriaId":"20C43679-0439-405A-B97F-685BEE50613B"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"5.17.2","matchCriteriaId":"210C679C-CF84-44A3-8939-E629C87E54BF"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.15:-:*:*:*:*:*:*","matchCriteriaId":"40D9C0D1-0F32-4A2B-9840-1072F5497540"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*","matchCriteriaId":"0460DA88-8FE1-46A2-9DDA-1F1ABA552E71"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*","matchCriteriaId":"AF55383D-4DF2-45DC-93F7-571F4F978EAB"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:*","matchCriteriaId":"9E9481B2-8AA6-4CBD-B5D3-C10F51FF6D01"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.15:rc6:*:*:*:*:*:*","matchCriteriaId":"EBD45831-4B79-42BC-ABC0-86870F0DEA89"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.15:rc7:*:*:*:*:*:*","matchCriteriaId":"948A6B8D-1B72-4945-8680-354E53BE1C80"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/8fd36358ce82382519b50b05f437493e1e00c4a9","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/95df5cd5a446df6738d2d45872e08594819080e4","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/b6e668ff43ebd87ccc8a19e5481345c428672295","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/b864d5350c18bea9369d0bdd9e7eb6f6172cc283","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]}]}}]}