CVE-2023-53666

Summary

In the Linux kernel, the following vulnerability has been resolved:

ASoC: codecs: wcd938x: fix missing mbhc init error handling

MBHC initialisation can fail so add the missing error handling to avoid dereferencing an error pointer when later configuring the jack:

Unable to handle kernel paging request at virtual address fffffffffffffff8

pc : wcd_mbhc_start+0x28/0x380 [snd_soc_wcd_mbhc]
lr : wcd938x_codec_set_jack+0x28/0x48 [snd_soc_wcd938x]

Call trace:
 wcd_mbhc_start+0x28/0x380 [snd_soc_wcd_mbhc]
 wcd938x_codec_set_jack+0x28/0x48 [snd_soc_wcd938x]
 snd_soc_component_set_jack+0x28/0x8c [snd_soc_core]
 qcom_snd_wcd_jack_setup+0x7c/0x19c [snd_soc_qcom_common]
 sc8280xp_snd_init+0x20/0x2c [snd_soc_sc8280xp]
 snd_soc_link_init+0x28/0x90 [snd_soc_core]
 snd_soc_bind_card+0x628/0xbfc [snd_soc_core]
 snd_soc_register_card+0xec/0x104 [snd_soc_core]
 devm_snd_soc_register_card+0x4c/0xa4 [snd_soc_core]
 sc8280xp_platform_probe+0xf0/0x108 [snd_soc_sc8280xp]

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/5a34d252052b5da743ef82591c860fc947384d4e
• https://git.kernel.org/stable/c/bb241ae928c694e365c30c888c9eb02dcc812dfd
• https://git.kernel.org/stable/c/31ee704c84c4bf4df8521ef1478c161f710d0f94
• https://git.kernel.org/stable/c/7dfae2631bfbdebecd35fe7b472ab3cc95c9ed66

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