UBUNTU-CVE-2024-36893
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.
02 / AFFECTED SOFTWARE
Affected packages
50 explicit affected versions
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26 explicit affected versions
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1 explicit affected versions
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57 explicit affected versions
19 explicit affected versions
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10 explicit affected versions
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12 explicit affected versions
46 explicit affected versions
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10 explicit affected versions
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9 explicit affected versions
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5 explicit affected versions
16 explicit affected versions
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10 explicit affected versions
47 explicit affected versions
3 explicit affected versions
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7 explicit affected versions
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3 explicit affected versions
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12 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
45 explicit affected versions
37 explicit affected versions
10 explicit affected versions
14 explicit affected versions
2 explicit affected versions
38 explicit affected versions
49 explicit affected versions
9 explicit affected versions
48 explicit affected versions
11 explicit affected versions
13 explicit affected versions
56 explicit affected versions
7 explicit affected versions
29 explicit affected versions
4 explicit affected versions
54 explicit affected versions
43 explicit affected versions
10 explicit affected versions
8 explicit affected versions
5 explicit affected versions
14 explicit affected versions
4 explicit affected versions
11 explicit affected versions
1 explicit affected versions
3 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/ae11f04b452b5205536e1c02d31f8045eba249dd
- https://git.kernel.org/stable/c/789326cafbd1f67f424436b6bc8bdb887a364637
- https://git.kernel.org/stable/c/ae11f04b452b5205536e1c02d31f8045eba249dd
- https://git.kernel.org/stable/c/d56d2ca03cc22123fd7626967d096d8661324e57
- https://git.kernel.org/stable/c/fc2b655cb6dd2b381f1f284989721002e39b6b77
- https://ubuntu.com/security/CVE-2024-36893
- https://ubuntu.com/security/notices/USN-6949-1
- https://ubuntu.com/security/notices/USN-6949-2
- https://ubuntu.com/security/notices/USN-6952-1
- https://ubuntu.com/security/notices/USN-6952-2
- https://ubuntu.com/security/notices/USN-6955-1
- https://ubuntu.com/security/notices/USN-7166-1
- https://ubuntu.com/security/notices/USN-7166-2
- https://ubuntu.com/security/notices/USN-7166-3
- https://ubuntu.com/security/notices/USN-7166-4
- https://ubuntu.com/security/notices/USN-7186-1
- https://ubuntu.com/security/notices/USN-7186-2
- https://ubuntu.com/security/notices/USN-7194-1
- https://www.cve.org/CVERecord?id=CVE-2024-36893