CVE-2021-47239 (GCVE-0-2021-47239)
Vulnerability from cvelistv5
Published
2024-05-21 14:19
Modified
2025-05-04 07:06
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: usb: fix possible use-after-free in smsc75xx_bind The commit 46a8b29c6306 ("net: usb: fix memory leak in smsc75xx_bind") fails to clean up the work scheduled in smsc75xx_reset-> smsc75xx_set_multicast, which leads to use-after-free if the work is scheduled to start after the deallocation. In addition, this patch also removes a dangling pointer - dev->data[0]. This patch calls cancel_work_sync to cancel the scheduled work and set the dangling pointer to NULL.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/14616c372a7be01a2fb8c56c9d8debd232b9e43d Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/2fc8300c9cfa5167fcb5b1a2a07db6f53e82f59b Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/4252bf6c2b245f47011098113d405ffad6ad5d5b Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/56b786d86694e079d8aad9b314e015cd4ac02a3d Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/570a52cf3e01d19f7fd1a251dfc52b0cd86c13cb Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/64160d1741a3de5204d1a822e058e0b4cc526504 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/7cc8b2e05fcea6edd022d26e82091d781af8fd9b Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/c4e3be2e7742863e454ce31faf8fd0109c00050b Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/14616c372a7be01a2fb8c56c9d8debd232b9e43d Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/2fc8300c9cfa5167fcb5b1a2a07db6f53e82f59b Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/4252bf6c2b245f47011098113d405ffad6ad5d5b Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/56b786d86694e079d8aad9b314e015cd4ac02a3d Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/570a52cf3e01d19f7fd1a251dfc52b0cd86c13cb Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/64160d1741a3de5204d1a822e058e0b4cc526504 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/7cc8b2e05fcea6edd022d26e82091d781af8fd9b Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/c4e3be2e7742863e454ce31faf8fd0109c00050b Patch
Impacted products
Vendor Product Version
Linux Linux Version: 200dbfcad8011e50c3cec269ed7b980836eeb1fa
Version: 22c840596af0c09068b6cf948616e6496e59e07f
Version: 9e6b8c1ff9d997e1fa16cbd2d60739adf6dc1bbc
Version: 9e6a3eccb28779710cbbafc4f4258d92509c6d07
Version: b95fb96e6339e34694dd578fb6bde3575b01af17
Version: 635ac38b36255d3cfb8312cf7c471334f4d537e0
Version: 70c886ac93f87ae7214a0c69151a28a8075dd95b
Version: 46a8b29c6306d8bbfd92b614ef65a47c900d8e70
 Create a notification for this product.
   Linux Linux Version: 4.4.271   ≤
Version: 4.9.271   ≤
Version: 4.14.235   ≤
Version: 4.19.193   ≤
Version: 5.4.124   ≤
Version: 5.10.42   ≤
Version: 5.12.9   ≤
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In addition, this patch\\nalso removes a dangling pointer - dev-\u003edata[0].\\n\\nThis patch calls cancel_work_sync to cancel the scheduled work and set\\nthe dangling pointer to NULL.\"},{\"lang\":\"es\",\"value\":\" En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net:usb: corrige posible use after free en smsc75xx_bind. La confirmaci\u00f3n 46a8b29c6306 (\\\"net:usb: corrige la p\u00e9rdida de memoria en smsc75xx_bind\\\") no logra limpiar el trabajo programado en smsc75xx_reset -\u0026gt; smsc75xx_set_multicast, lo que genera use after free si el trabajo est\u00e1 programado para comenzar despu\u00e9s de la desasignaci\u00f3n. Adem\u00e1s, este parche tambi\u00e9n elimina un puntero colgante: dev-\u0026gt;data[0]. 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      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
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  }
}


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