CVE-2021-47239
- Source
- https://cve.org/CVERecord?id=CVE-2021-47239
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47239.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-47239
- Downstream
- Related
- Published
- 2024-05-21T15:15:13.100Z
- Modified
- 2026-03-10T23:52:19.414393Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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 smsc75xxbind") fails to clean up the work scheduled in smsc75xxreset-> smsc75xxsetmulticast, 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 cancelworksync to cancel the scheduled work and set the dangling pointer to NULL.
- References
-
- https://git.kernel.org/stable/c/2fc8300c9cfa5167fcb5b1a2a07db6f53e82f59b
- https://git.kernel.org/stable/c/4252bf6c2b245f47011098113d405ffad6ad5d5b
- https://git.kernel.org/stable/c/570a52cf3e01d19f7fd1a251dfc52b0cd86c13cb
- https://git.kernel.org/stable/c/64160d1741a3de5204d1a822e058e0b4cc526504
- https://git.kernel.org/stable/c/7cc8b2e05fcea6edd022d26e82091d781af8fd9b
- https://git.kernel.org/stable/c/c4e3be2e7742863e454ce31faf8fd0109c00050b
- https://git.kernel.org/stable/c/14616c372a7be01a2fb8c56c9d8debd232b9e43d
- https://git.kernel.org/stable/c/56b786d86694e079d8aad9b314e015cd4ac02a3d
Affected packages
Git /
Database specific
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47239.json"
unresolved_ranges
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{
"events": [
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"introduced": "4.4.271"
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{
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