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CVE-2024-35790 affects the Linux kernel USB Type-C DisplayPort alternate-mode driver. During dp_altmode_probe(), sysfs attributes can become accessible to userspace before typec_altmode_set_drvdata() finishes initializing the driver data. A concurrent sysfs read can therefore cause dev_get_drvdata() to return NULL, leading to a NULL-pointer dereference when hpd_show() accesses dp->hpd or pin_assignment_show() accesses dp->lock. The fix replaces manual sysfs node creation with the driver's default device attribute group, preventing premature exposure while preserving the sysfs ABI.
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A vulnerability affecting the linux package and related packages, covered by Tenable Cloud Security plugin 465196 with High severity. The reference does not describe the underlying flaw or its impact. Updating to version 6.1.140-1 or later is the prescribed remediation.
Linux kernel USB Type-C DisplayPort alternate-mode sysfs attribute-group flaw.
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