CVE-2024-36893

usb: typec: tcpm: Check for port partner validity before consuming it

State: Published
Severity: Not scored
Published: May 30, 2024
Updated: May 23, 2026
Reserved: May 30, 2024

Description

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

usb: typec: tcpm: Check for port partner validity before consuming it

typec_register_partner() does not guarantee partner registration to always succeed. In the event of failure, port->partner is set to the error value or NULL. Given that port->partner validity is not checked, this results in the following crash:

Unable to handle kernel NULL pointer dereference at virtual address xx pc : run_state_machine+0x1bc8/0x1c08 lr : run_state_machine+0x1b90/0x1c08 .. Call trace: run_state_machine+0x1bc8/0x1c08 tcpm_state_machine_work+0x94/0xe4 kthread_worker_fn+0x118/0x328 kthread+0x1d0/0x23c ret_from_fork+0x10/0x20

To prevent the crash, check for port->partner validity before derefencing it in all the call sites.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	31220bd89c22a18478f52fcd8069e8e2adb8f4f2 to before 2a07e6f0ad8a6e504a3912cfe8dc859b7d0740a5Affected 9b7cd3fe01f0d03cf5820b351a6be2a6e0a6da6f to before d56d2ca03cc22123fd7626967d096d8661324e57Affected c97cd0b4b54eb42aed7f6c3c295a2d137f6d2416 to before 789326cafbd1f67f424436b6bc8bdb887a364637Affected c97cd0b4b54eb42aed7f6c3c295a2d137f6d2416 to before fc2b655cb6dd2b381f1f284989721002e39b6b77Affected c97cd0b4b54eb42aed7f6c3c295a2d137f6d2416 to before ae11f04b452b5205536e1c02d31f8045eba249ddAffected 2897b36d2482b84f35e659989d5cb4501fb31ccdAffected cbcf107780aecf51aba68488044a416d95060b6dAffected 5.15.132 to before 5.15.168Affected 6.1.53 to before 6.1.91Affected 6.4.16 to before 6.5Affected 6.5.3 to before 6.6Affected
LinuxLinux	6.6Affected before 6.6Not affected 5.15.168 through 5.15.Not affected 6.1.91 through 6.1.Not affected 6.6.31 through 6.6.Not affected 6.8.10 through 6.8.Not affected 6.9 and laterNot affected

Product

Versions

LinuxLinux

31220bd89c22a18478f52fcd8069e8e2adb8f4f2 to before 2a07e6f0ad8a6e504a3912cfe8dc859b7d0740a5Affected
9b7cd3fe01f0d03cf5820b351a6be2a6e0a6da6f to before d56d2ca03cc22123fd7626967d096d8661324e57Affected
c97cd0b4b54eb42aed7f6c3c295a2d137f6d2416 to before 789326cafbd1f67f424436b6bc8bdb887a364637Affected
c97cd0b4b54eb42aed7f6c3c295a2d137f6d2416 to before fc2b655cb6dd2b381f1f284989721002e39b6b77Affected
c97cd0b4b54eb42aed7f6c3c295a2d137f6d2416 to before ae11f04b452b5205536e1c02d31f8045eba249ddAffected
2897b36d2482b84f35e659989d5cb4501fb31ccdAffected
cbcf107780aecf51aba68488044a416d95060b6dAffected
5.15.132 to before 5.15.168Affected
6.1.53 to before 6.1.91Affected
6.4.16 to before 6.5Affected
6.5.3 to before 6.6Affected

LinuxLinux

6.6Affected
before 6.6Not affected
5.15.168 through 5.15.*Not affected
6.1.91 through 6.1.*Not affected
6.6.31 through 6.6.*Not affected
6.8.10 through 6.8.*Not affected
6.9 and laterNot affected

References

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