vulnerability
Ubuntu: (CVE-2021-47239): linux vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:S/C:C/I:C/A:C) | May 21, 2024 | Nov 19, 2024 | Feb 11, 2025 |
Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
May 21, 2024
Added
Nov 19, 2024
Modified
Feb 11, 2025
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.
Solution(s)
ubuntu-upgrade-linuxubuntu-upgrade-linux-awsubuntu-upgrade-linux-aws-5-4ubuntu-upgrade-linux-aws-fipsubuntu-upgrade-linux-aws-hweubuntu-upgrade-linux-azureubuntu-upgrade-linux-azure-4-15ubuntu-upgrade-linux-azure-5-4ubuntu-upgrade-linux-azure-fipsubuntu-upgrade-linux-bluefieldubuntu-upgrade-linux-fipsubuntu-upgrade-linux-gcpubuntu-upgrade-linux-gcp-4-15ubuntu-upgrade-linux-gcp-5-4ubuntu-upgrade-linux-gcp-fipsubuntu-upgrade-linux-gkeopubuntu-upgrade-linux-hweubuntu-upgrade-linux-hwe-5-4ubuntu-upgrade-linux-kvmubuntu-upgrade-linux-oracleubuntu-upgrade-linux-oracle-5-4ubuntu-upgrade-linux-raspiubuntu-upgrade-linux-raspi-5-4
References
- CVE-2021-47239
- https://attackerkb.com/topics/CVE-2021-47239
- URL-https://git.kernel.org/linus/56b786d86694e079d8aad9b314e015cd4ac02a3d
- URL-https://git.kernel.org/stable/c/14616c372a7be01a2fb8c56c9d8debd232b9e43d
- URL-https://git.kernel.org/stable/c/2fc8300c9cfa5167fcb5b1a2a07db6f53e82f59b
- URL-https://git.kernel.org/stable/c/4252bf6c2b245f47011098113d405ffad6ad5d5b
- URL-https://git.kernel.org/stable/c/56b786d86694e079d8aad9b314e015cd4ac02a3d
- URL-https://git.kernel.org/stable/c/570a52cf3e01d19f7fd1a251dfc52b0cd86c13cb
- URL-https://git.kernel.org/stable/c/64160d1741a3de5204d1a822e058e0b4cc526504
- URL-https://git.kernel.org/stable/c/7cc8b2e05fcea6edd022d26e82091d781af8fd9b
- URL-https://git.kernel.org/stable/c/c4e3be2e7742863e454ce31faf8fd0109c00050b
- URL-https://www.cve.org/CVERecord?id=CVE-2021-47239
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