CVE - CVE-2021-47239

CVE-ID
CVE-2021-47239	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/14616c372a7be01a2fb8c56c9d8debd232b9e43d URL:https://git.kernel.org/stable/c/14616c372a7be01a2fb8c56c9d8debd232b9e43d MISC:https://git.kernel.org/stable/c/2fc8300c9cfa5167fcb5b1a2a07db6f53e82f59b URL:https://git.kernel.org/stable/c/2fc8300c9cfa5167fcb5b1a2a07db6f53e82f59b MISC:https://git.kernel.org/stable/c/4252bf6c2b245f47011098113d405ffad6ad5d5b URL:https://git.kernel.org/stable/c/4252bf6c2b245f47011098113d405ffad6ad5d5b MISC:https://git.kernel.org/stable/c/56b786d86694e079d8aad9b314e015cd4ac02a3d URL:https://git.kernel.org/stable/c/56b786d86694e079d8aad9b314e015cd4ac02a3d MISC:https://git.kernel.org/stable/c/570a52cf3e01d19f7fd1a251dfc52b0cd86c13cb URL:https://git.kernel.org/stable/c/570a52cf3e01d19f7fd1a251dfc52b0cd86c13cb MISC:https://git.kernel.org/stable/c/64160d1741a3de5204d1a822e058e0b4cc526504 URL:https://git.kernel.org/stable/c/64160d1741a3de5204d1a822e058e0b4cc526504 MISC:https://git.kernel.org/stable/c/7cc8b2e05fcea6edd022d26e82091d781af8fd9b URL:https://git.kernel.org/stable/c/7cc8b2e05fcea6edd022d26e82091d781af8fd9b MISC:https://git.kernel.org/stable/c/c4e3be2e7742863e454ce31faf8fd0109c00050b URL:https://git.kernel.org/stable/c/c4e3be2e7742863e454ce31faf8fd0109c00050b
Assigning CNA
kernel.org
Date Record Created
20240410	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240410)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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