vulnerability
Ubuntu: (CVE-2021-47669): linux vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:S/C:C/I:C/A:C) | Apr 17, 2025 | May 6, 2025 | Jun 12, 2025 |
Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
Apr 17, 2025
Added
May 6, 2025
Modified
Jun 12, 2025
Description
In the Linux kernel, the following vulnerability has been resolved:
can: vxcan: vxcan_xmit: fix use after free bug
After calling netif_rx_ni(skb), dereferencing skb is unsafe.
Especially, the canfd_frame cfd which aliases skb memory is accessed
after the netif_rx_ni().
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-fipsubuntu-upgrade-linux-gcpubuntu-upgrade-linux-gcp-4-15ubuntu-upgrade-linux-gcp-5-4ubuntu-upgrade-linux-gcp-fipsubuntu-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-2021-47669
- https://attackerkb.com/topics/CVE-2021-47669
- URL-https://git.kernel.org/linus/75854cad5d80976f6ea0f0431f8cedd3bcc475cb
- URL-https://git.kernel.org/stable/c/6d6dcf2399cdd26f7f5426ca8dd8366b7f2ca105
- URL-https://git.kernel.org/stable/c/75854cad5d80976f6ea0f0431f8cedd3bcc475cb
- URL-https://git.kernel.org/stable/c/9b820875a32a3443d67bfd368e93038354e98052
- URL-https://git.kernel.org/stable/c/a24476b37167816e6352ca1a2cf3769847774f70
- URL-https://git.kernel.org/stable/c/e771a874076115df8bff27d325edfd2340e4ec69
- URL-https://www.cve.org/CVERecord?id=CVE-2021-47669
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