In the Linux kernel, the following vulnerability has been resolved:
ASoC: fsl: fsl_audmix: Validate written enum values
fsl_audmix_put_mix_clk_src() and fsl_audmix_put_out_src() convert the user-provided enum item with snd_soc_enum_item_to_val() before checking whether the item is within the enums item count.
The generic snd_soc_put_enum_double() helper performs that validation, but these callbacks use the converted value first: the clock-source path tests it with BIT(), and the output-source path indexes the prms transition table with it.
Reject out-of-range enum items before converting them.
References
- https://git.kernel.org/stable/c/0b10c6203e62d9e7337cc401568b201f9bac79ec
- https://git.kernel.org/stable/c/0f1510e84d7bfc3eb9538efa65c6ea0aadf1078c
- https://git.kernel.org/stable/c/3cd17e4e2871114d5579fa7bc8da66faf7fc1930
- https://git.kernel.org/stable/c/5b7a23c1ed04e794ef3b31e452ef5c93e1e34b4a
- https://git.kernel.org/stable/c/7513831b90a38d55fa089e3e1b49691e467afee6
- https://git.kernel.org/stable/c/8fb4364eb494b926d009bfaf3c98f07c3aa5d9f3
- https://git.kernel.org/stable/c/b36d6d48faa6b1bb723b8f4e527c531a1a68520e
- https://git.kernel.org/stable/c/b4774a7da12b14fc37219ab4368d1907f9b5aca4