Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: wcd934x: handle channel mappping list correctly Currently each channel is added as list to dai channel list, however there is danger of adding same channel to multiple dai channel list which endups corrupting the other list where its already added. This patch ensures that the channel is actually free before adding to the dai channel list and also ensures that the channel is on the list before deleting it. This check was missing previously, and we did not hit this issue as we were testing very simple usecases with sequence of amixer commands.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.6, < 5.10.85 |
References
- https://git.kernel.org/stable/c/1089dac26c6b4b833323ae6c0ceab29fb30ede72Patch
- https://git.kernel.org/stable/c/23ba28616d3063bd4c4953598ed5e439ca891101Patch
- https://git.kernel.org/stable/c/339ffb5b56005582aacc860524d2d208604049d1Patch
- https://git.kernel.org/stable/c/1089dac26c6b4b833323ae6c0ceab29fb30ede72Patch
- https://git.kernel.org/stable/c/23ba28616d3063bd4c4953598ed5e439ca891101Patch
- https://git.kernel.org/stable/c/339ffb5b56005582aacc860524d2d208604049d1Patch
FAQ
What is CVE-2021-47502?
CVE-2021-47502 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: wcd934x: handle channel mappping list correctly Currently each channel is added as list to dai channel list, however...
How severe is CVE-2021-47502?
CVE-2021-47502 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-2021-47502?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.