Ubuntu.comUB:CVE-2021-47239CVE-2021-47239
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.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 23.10 | noarch | linux | < any | UNKNOWN |
| ubuntu | 24.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 14.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 16.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
References
git.kernel.org/linus/56b786d86694e079d8aad9b314e015cd4ac02a3d (5.13-rc7)
git.kernel.org/stable/c/14616c372a7be01a2fb8c56c9d8debd232b9e43d
git.kernel.org/stable/c/2fc8300c9cfa5167fcb5b1a2a07db6f53e82f59b
git.kernel.org/stable/c/4252bf6c2b245f47011098113d405ffad6ad5d5b
git.kernel.org/stable/c/56b786d86694e079d8aad9b314e015cd4ac02a3d
git.kernel.org/stable/c/570a52cf3e01d19f7fd1a251dfc52b0cd86c13cb
git.kernel.org/stable/c/64160d1741a3de5204d1a822e058e0b4cc526504
git.kernel.org/stable/c/7cc8b2e05fcea6edd022d26e82091d781af8fd9b
git.kernel.org/stable/c/c4e3be2e7742863e454ce31faf8fd0109c00050b
launchpad.net/bugs/cve/CVE-2021-47239
nvd.nist.gov/vuln/detail/CVE-2021-47239
security-tracker.debian.org/tracker/CVE-2021-47239
www.cve.org/CVERecord?id=CVE-2021-47239
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