medium
5.5
CWE
476
Advisory Published
Updated

CVE-2023-52877: usb: typec: tcpm: Fix NULL pointer dereference in tcpm_pd_svdm()

First published: Tue May 21 2024(Updated: )

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.

Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Affected SoftwareAffected VersionHow to fix
redhat/kernel<5.15.138
5.15.138
redhat/kernel<6.1.62
6.1.62
redhat/kernel<6.5.11
6.5.11
redhat/kernel<6.6.1
6.6.1
redhat/kernel<6.7
6.7
Linux Kernel>=5.12<5.15.138
Linux Kernel>=5.16<6.1.62
Linux Kernel>=6.2<6.5.11
Linux Kernel>=6.6<6.6.1
IBM Security Verify Governance - Identity Manager<=ISVG 10.0.2
IBM Security Verify Governance, Identity Manager Software Stack<=ISVG 10.0.2
IBM Security Verify Governance, Identity Manager Virtual Appliance<=ISVG 10.0.2
IBM Security Verify Governance Identity Manager Container<=ISVG 10.0.2

Remedy

https://git.kernel.org/stable/c/4987daf86c152ff882d51572d154ad12e4ff3a4b

Remedy

https://git.kernel.org/stable/c/9ee038590d808a95d16adf92818dcd4752273c08

Remedy

https://git.kernel.org/stable/c/b37a168c0137156042a0ca9626651b5a789e822b

Remedy

https://git.kernel.org/stable/c/e5f53a68a596e04df3fde3099273435a30b6fdac

Remedy

https://git.kernel.org/stable/c/e7a802447c491903aa7cb45967aa2a934a4e63fc

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2023-52877?

    CVE-2023-52877 has a high severity due to the potential for a NULL pointer dereference in the Linux kernel.

  • How do I fix CVE-2023-52877?

    To fix CVE-2023-52877, update the Linux kernel to version 5.15.138, 6.1.62, 6.5.11, 6.6.1, or 6.7.

  • Which versions of the Linux kernel are affected by CVE-2023-52877?

    CVE-2023-52877 affects Linux kernel versions up to 5.15.138, 6.1.62, 6.5.11, 6.6.1, and 6.7.

  • What component of the Linux kernel does CVE-2023-52877 impact?

    CVE-2023-52877 impacts the USB Type-C Port Manager (tcpm) component of the Linux kernel.

  • Can CVE-2023-52877 be exploited remote?

    Yes, CVE-2023-52877 can potentially be exploited remotely due to the nature of the vulnerability in the USB subsystem.

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