CVE-2021-47239 (GCVE-0-2021-47239)

Vulnerability from cvelistv5 – Published: 2024-05-21 14:19 – Updated: 2025-05-04 07:06
VLAI?
Title
net: usb: fix possible use-after-free in smsc75xx_bind
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 200dbfcad8011e50c3cec269ed7b980836eeb1fa , < 7cc8b2e05fcea6edd022d26e82091d781af8fd9b (git)
Affected: 22c840596af0c09068b6cf948616e6496e59e07f , < 64160d1741a3de5204d1a822e058e0b4cc526504 (git)
Affected: 9e6b8c1ff9d997e1fa16cbd2d60739adf6dc1bbc , < c4e3be2e7742863e454ce31faf8fd0109c00050b (git)
Affected: 9e6a3eccb28779710cbbafc4f4258d92509c6d07 , < 2fc8300c9cfa5167fcb5b1a2a07db6f53e82f59b (git)
Affected: b95fb96e6339e34694dd578fb6bde3575b01af17 , < 4252bf6c2b245f47011098113d405ffad6ad5d5b (git)
Affected: 635ac38b36255d3cfb8312cf7c471334f4d537e0 , < 570a52cf3e01d19f7fd1a251dfc52b0cd86c13cb (git)
Affected: 70c886ac93f87ae7214a0c69151a28a8075dd95b , < 14616c372a7be01a2fb8c56c9d8debd232b9e43d (git)
Affected: 46a8b29c6306d8bbfd92b614ef65a47c900d8e70 , < 56b786d86694e079d8aad9b314e015cd4ac02a3d (git)
Create a notification for this product.
    Linux Linux Affected: 4.4.271 , < 4.4.274 (semver)
Affected: 4.9.271 , < 4.9.274 (semver)
Affected: 4.14.235 , < 4.14.238 (semver)
Affected: 4.19.193 , < 4.19.196 (semver)
Affected: 5.4.124 , < 5.4.128 (semver)
Affected: 5.10.42 , < 5.10.46 (semver)
Affected: 5.12.9 , < 5.12.13 (semver)
Create a notification for this product.
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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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