Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ASoC: SOF: ipc3-topology: Correct get_control_data for non bytes payload It is possible to craft a topology where sof_get_control_data() would do out of bounds access because it expects that it is only called when the payload is bytes type. Confusingly it also handles other types of controls, but the payload parsing implementation is only valid for bytes. Fix the code to count the non bytes controls and instead of storing a pointer to sof_abi_hdr in sof_widget_data (which is only valid for bytes), store the pointer to the data itself and add a new member to save the size of the data. In case of non bytes controls we store the pointer to the chanv itself, which is just an array of values at the end. In case of bytes control, drop the wrong cdata->data (wdata[i].pdata) check against NULL since it is incorrect and invalid in this context. The data is pointing to the end of cdata struct, so it should never be null.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.18, < 5.18.3 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/896b03bb7c7010042786cfae2115083d4c241dd3Patch
- https://git.kernel.org/stable/c/a962890a5a3cce903ff7c7a19fadee63ed9efdc7Patch
FAQ
What is CVE-2022-49518?
CVE-2022-49518 is a vulnerability with a CVSS score of 7.1 (HIGH). In the Linux kernel, the following vulnerability has been resolved: ASoC: SOF: ipc3-topology: Correct get_control_data for non bytes payload It is possible to craft a topology where sof_get_control_...
How severe is CVE-2022-49518?
CVE-2022-49518 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-49518?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.