CVE-2023-52877

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

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

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-476

Affected software

VendorProductVersions
LinuxLinux>= 5e1d4c49fbc86dab6e005d66f066bd53c9479cde, < e5f53a68a596e04df3fde3099273435a30b6fdac; >= 5e1d4c49fbc86dab6e005d66f066bd53c9479cde, < e7a802447c491903aa7cb45967aa2a934a4e63fc; >= 5e1d4c49fbc86dab6e005d66f066bd53c9479cde, < 9ee038590d808a95d16adf92818dcd4752273c08; >= 5e1d4c49fbc86dab6e005d66f066bd53c9479cde, < b37a168c0137156042a0ca9626651b5a789e822b; >= 5e1d4c49fbc86dab6e005d66f066bd53c9479cde, < 4987daf86c152ff882d51572d154ad12e4ff3a4b
LinuxLinux5.12

References

Timeline

Published
May 21, 2024
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2023-52877: Medium severity, CVSS 5.5 | Vulnix