{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-18T17:55:34.396","vulnerabilities":[{"cve":{"id":"CVE-2022-50005","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2025-06-18T11:15:28.397","lastModified":"2025-11-14T16:51:49.533","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: pn533: Fix use-after-free bugs caused by pn532_cmd_timeout\n\nWhen the pn532 uart device is detaching, the pn532_uart_remove()\nis called. But there are no functions in pn532_uart_remove() that\ncould delete the cmd_timeout timer, which will cause use-after-free\nbugs. The process is shown below:\n\n    (thread 1)                  |        (thread 2)\n                                |  pn532_uart_send_frame\npn532_uart_remove               |    mod_timer(&pn532->cmd_timeout,...)\n  ...                           |    (wait a time)\n  kfree(pn532) //FREE           |    pn532_cmd_timeout\n                                |      pn532_uart_send_frame\n                                |        pn532->... //USE\n\nThis patch adds del_timer_sync() in pn532_uart_remove() in order to\nprevent the use-after-free bugs. What's more, the pn53x_unregister_nfc()\nis well synchronized, it sets nfc_dev->shutting_down to true and there\nare no syscalls could restart the cmd_timeout timer."},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nfc: pn533: Se corrigen los errores de Use-After-Free causados por pn532_cmd_timeout. Cuando se desconecta el dispositivo uart pn532, se llama a pn532_uart_remove(). Sin embargo, no hay funciones en pn532_uart_remove() que puedan eliminar el temporizador cmd_timeout, lo que causaría errores de Use-After-Free. El proceso se muestra a continuación: (hilo 1) | (hilo 2) | pn532_uart_send_frame pn532_uart_remove | mod_timer(&pn532->cmd_timeout,...) ... | (esperar un tiempo) kfree(pn532) //FREE | pn532_cmd_timeout | pn532_uart_send_frame | pn532->... //USE Este parche añade del_timer_sync() a pn532_uart_remove() para evitar errores de Use-After-Free. Además, pn53x_unregister_nfc() está bien sincronizado, establece nfc_dev->shutting_down como verdadero y ninguna llamada al sistema podría reiniciar el temporizador cmd_timeout."}],"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":"5.5","versionEndExcluding":"5.10.140","matchCriteriaId":"A26216A8-920B-4892-A1EB-143451AFFC31"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.64","matchCriteriaId":"292F3687-ADC2-4F3D-9710-3BCAD11A52BE"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"5.19.6","matchCriteriaId":"89E99903-E16D-475D-954B-2BAC46C98262"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:*","matchCriteriaId":"E8BD11A3-8643-49B6-BADE-5029A0117325"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.0:rc2:*:*:*:*:*:*","matchCriteriaId":"5F0AD220-F6A9-4012-8636-155F1B841FAD"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/2c71f5d55a86fd5969428abf525c1ae6b1c7b0f5","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/50403ee6daddf0d7a14e9d3b51a377c39a08ec8c","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/9c34c33893db7a80d0e4b55c23d3b65e29609cfb","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/f1e941dbf80a9b8bab0bffbc4cbe41cc7f4c6fb6","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]}]}}]}