Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: tipc: check for null after calling kmemdup kmemdup can return a null pointer so need to check for it, otherwise the null key will be dereferenced later in tipc_crypto_key_xmit as can be seen in the trace [1]. [1] https://syzkaller.appspot.com/bug?id=bca180abb29567b189efdbdb34cbf7ba851c2a58
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.5, < 5.10.82 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/3e6db079751afd527bf3db32314ae938dc571916Patch
- https://git.kernel.org/stable/c/9404c4145542c23019a80ab1bb2ecf73cd057b10Patch
- https://git.kernel.org/stable/c/a7d91625863d4ffed63b993b5e6dc1298b6430c9Patch
- https://git.kernel.org/stable/c/3e6db079751afd527bf3db32314ae938dc571916Patch
- https://git.kernel.org/stable/c/9404c4145542c23019a80ab1bb2ecf73cd057b10Patch
- https://git.kernel.org/stable/c/a7d91625863d4ffed63b993b5e6dc1298b6430c9Patch
FAQ
What is CVE-2021-47186?
CVE-2021-47186 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: tipc: check for null after calling kmemdup kmemdup can return a null pointer so need to check for it, otherwise the null key will ...
How severe is CVE-2021-47186?
CVE-2021-47186 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-47186?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.