发布时间: 2024年7月4日
修改时间: 2024年7月4日
In the Linux kernel, the following vulnerability has been resolved:usb: typec: tcpm: Check for port partner validity before consuming ittypec_register_partner() does not guarantee partner registrationto always succeed. In the event of failure, port->partner is setto the error value or NULL. Given that port->partner validity isnot 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+0x10/0x20To prevent the crash, check for port->partner validity beforederefencing it in all the call sites.
| NVD | openEuler | |
|---|---|---|
| CVSS评分 | 5.5 | 5.5 |
| Attack Vector | Local | Local |
| Attack Complexity | Low | Low |
| Privileges Required | Low | Low |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality | None | None |
| Integrity | None | None |
| Availability | High | High |
| 公告名 | 概要 | 发布时间 |
|---|---|---|
| KylinSec-SA-2024-3015 | In the Linux kernel, the following vulnerability has been resolved:usb: typec: tcpm: Check for port partner validity before consuming ittypec_register_partner() does not guarantee partner registrationto always succeed. In the event of failure, port->partner is setto the error value or NULL. Given that port->partner validity isnot 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+0x10/0x20To prevent the crash, check for port->partner validity beforederefencing it in all the call sites. | 2024年7月4日 |
| 产品 | 包 | 状态 |
|---|---|---|
| KY3.4-5A | kernel | Unaffected |
| KY3.5.2 | kernel | Unaffected |
| V6 | kernel | Unaffected |
