In the Linux kernel, the following vulnerability has been resolved: ASoC: mediatek: Assign dummy when codec not specified for a DAI link MediaTek sound card drivers are checking whether a DAI link is present and used on a board to assign the correct parameters and this is done by checking the codec DAI names at probe time. If no real codec is present, assign the dummy codec to the DAI link to avoid NULL pointer during string comparison.
https://git.kernel.org/stable/c/cbbcabc7f0979f6542372cf88d7a9da7143a4226
https://git.kernel.org/stable/c/87b8dca6e06f9b1681bc52bf7bfa85c663a11158
https://git.kernel.org/stable/c/5f39231888c63f0a7708abc86b51b847476379d8
https://git.kernel.org/stable/c/0c052b1c11d8119f3048b1f7b3c39a90500cacf9