In the Linux kernel, the following vulnerability has been resolved:
usb: typec: tcpm: Fix NULL pointer dereference in tcpm_pd_svdm()
It is possible that typec_register_partner() returns ERR_PTR on failure.
When port->partner is an error, a NULL pointer dereference may occur as
shown below.
[91222.095236][ T319] typec port0: failed to register partner (-17)
...
[91225.061491][ T319] Unable to handle kernel NULL pointer dereference
at virtual address 000000000000039f
[91225.274642][ T319] pc : tcpm_pd_data_request+0x310/0x13fc
[91225.274646][ T319] lr : tcpm_pd_data_request+0x298/0x13fc
[91225.308067][ T319] Call trace:
[91225.308070][ T319] tcpm_pd_data_request+0x310/0x13fc
[91225.308073][ T319] tcpm_pd_rx_handler+0x100/0x9e8
[91225.355900][ T319] kthread_worker_fn+0x178/0x58c
[91225.355902][ T319] kthread+0x150/0x200
[91225.355905][ T319] ret_from_fork+0x10/0x30
Add a check for port->partner to avoid dereferencing a NULL pointer.
Metrics
Affected Vendors & Products
References
History
Tue, 05 Nov 2024 20:15:00 +0000
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MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2024-05-21T15:32:09.946Z
Updated: 2024-11-04T14:54:24.817Z
Reserved: 2024-05-21T15:19:24.264Z
Link: CVE-2023-52877
Vulnrichment
Updated: 2024-08-02T23:11:36.091Z
NVD
Status : Awaiting Analysis
Published: 2024-05-21T16:15:24.377
Modified: 2024-11-21T08:40:46.807
Link: CVE-2023-52877
Redhat