{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-02T13:02:13.345","vulnerabilities":[{"cve":{"id":"CVE-2026-23281","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2026-03-25T11:16:22.657","lastModified":"2026-05-22T00:31:53.367","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: libertas: fix use-after-free in lbs_free_adapter()\n\nThe lbs_free_adapter() function uses timer_delete() (non-synchronous)\nfor both command_timer and tx_lockup_timer before the structure is\nfreed. This is incorrect because timer_delete() does not wait for\nany running timer callback to complete.\n\nIf a timer callback is executing when lbs_free_adapter() is called,\nthe callback will access freed memory since lbs_cfg_free() frees the\ncontaining structure immediately after lbs_free_adapter() returns.\n\nBoth timer callbacks (lbs_cmd_timeout_handler and lbs_tx_lockup_handler)\naccess priv->driver_lock, priv->cur_cmd, priv->dev, and other fields,\nwhich would all be use-after-free violations.\n\nUse timer_delete_sync() instead to ensure any running timer callback\nhas completed before returning.\n\nThis bug was introduced in commit 8f641d93c38a (\"libertas: detect TX\nlockups and reset hardware\") where del_timer() was used instead of\ndel_timer_sync() in the cleanup path. The command_timer has had the\nsame issue since the driver was first written."},{"lang":"es","value":"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nwifi: libertas: corregir uso después de liberación en lbs_free_adapter()\n\nLa función lbs_free_adapter() usa timer_delete() (no síncrono) para command_timer y tx_lockup_timer antes de que la estructura sea liberada. Esto es incorrecto porque timer_delete() no espera a que ninguna devolución de llamada de temporizador en ejecución se complete.\n\nSi una devolución de llamada de temporizador se está ejecutando cuando se llama a lbs_free_adapter(), la devolución de llamada accederá a memoria liberada ya que lbs_cfg_free() libera la estructura contenedora inmediatamente después de que lbs_free_adapter() retorna.\n\nAmbas devoluciones de llamada de temporizador (lbs_cmd_timeout_handler y lbs_tx_lockup_handler) acceden a priv->driver_lock, priv->cur_cmd, priv->dev y otros campos, lo que serían todas violaciones de uso después de liberación.\n\nUsar timer_delete_sync() en su lugar para asegurar que cualquier devolución de llamada de temporizador en ejecución se haya completado antes de retornar.\n\nEste error fue introducido en el commit 8f641d93c38a ('libertas: detectar bloqueos de TX y reiniciar hardware') donde se usó del_timer() en lugar de del_timer_sync() en la ruta de limpieza. El command_timer ha tenido el mismo problema desde que el controlador fue escrito por primera vez."}],"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:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-416"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.24","versionEndExcluding":"5.10.253","matchCriteriaId":"23F88A56-E27D-46A7-B32C-65333C046B72"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.203","matchCriteriaId":"20DDB3E9-AABF-4107-ADB0-5362AA067045"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.167","matchCriteriaId":"2EDC6BAF-B710-4E26-B6AA-D68922EE7B43"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.130","matchCriteriaId":"C57BB918-DF28-46B3-94F7-144176841267"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.78","matchCriteriaId":"28D591F5-B196-4CC9-905C-DC80F116E7A8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18.17","matchCriteriaId":"A5E006E4-59C7-43C1-9231-62A72219F2BA"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"6.19.7","matchCriteriaId":"69245D10-0B71-485E-80C3-A64F077004D3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*","matchCriteriaId":"F253B622-8837-4245-BCE5-A7BF8FC76A16"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/03cc8f90d0537fcd4985c3319b4fafbf2e3fb1f0","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/09f3c30ab3b1371eaf9676a1b8add57bca763083","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/3c5c818c78b03a1725f3dcd566865c77b48dd3a6","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/3f9dec4a6d95d7f1f5e9e9dfdfa173c053bba8dc","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/a9f55b14486426d907459bced5825a25063bd922","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/b15e0fa7adb4de3a03aee9e6fc4d83e5cf0a65e4","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/d0155fe68f31b339961cf2d4f92937d57e9384e6","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/ed7d30f90b77f73a47498686ede83f622b7e4f0d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]}]}}]}