Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: can: peak_usb: fix use after free bugs After calling peak_usb_netif_rx_ni(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is accessed after the peak_usb_netif_rx_ni(). Reordering the lines solves the issue.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.0, < 4.19.171 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/50aca891d7a554db0901b245167cd653d73aaa71Patch
- https://git.kernel.org/stable/c/5408824636fa0dfedb9ecb0d94abd573131bfbbePatch
- https://git.kernel.org/stable/c/ddd1416f44130377798c1430b76503513b7497c2Patch
- https://git.kernel.org/stable/c/ec939c13c3fff2114479769c8380b7f1a54feca9Patch
FAQ
What is CVE-2021-47670?
CVE-2021-47670 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: can: peak_usb: fix use after free bugs After calling peak_usb_netif_rx_ni(skb), dereferencing skb is unsafe. Especially, the can_f...
How severe is CVE-2021-47670?
CVE-2021-47670 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-47670?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.