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.
Metrics
Affected Vendors & Products
References
History
Thu, 17 Oct 2024 14:15:00 +0000
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MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2024-05-30T15:28:59.113Z
Updated: 2024-11-05T09:27:37.212Z
Reserved: 2024-05-30T15:25:07.065Z
Link: CVE-2024-36893
Vulnrichment
Updated: 2024-08-02T03:43:50.062Z
NVD
Status : Modified
Published: 2024-05-30T16:15:12.773
Modified: 2024-11-21T09:22:45.080
Link: CVE-2024-36893
Redhat