Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.12, < 5.15.138 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/4987daf86c152ff882d51572d154ad12e4ff3a4bPatch
- https://git.kernel.org/stable/c/9ee038590d808a95d16adf92818dcd4752273c08Patch
- https://git.kernel.org/stable/c/b37a168c0137156042a0ca9626651b5a789e822bPatch
- https://git.kernel.org/stable/c/e5f53a68a596e04df3fde3099273435a30b6fdacPatch
- https://git.kernel.org/stable/c/e7a802447c491903aa7cb45967aa2a934a4e63fcPatch
- https://git.kernel.org/stable/c/4987daf86c152ff882d51572d154ad12e4ff3a4bPatch
- https://git.kernel.org/stable/c/9ee038590d808a95d16adf92818dcd4752273c08Patch
- https://git.kernel.org/stable/c/b37a168c0137156042a0ca9626651b5a789e822bPatch
- https://git.kernel.org/stable/c/e5f53a68a596e04df3fde3099273435a30b6fdacPatch
- https://git.kernel.org/stable/c/e7a802447c491903aa7cb45967aa2a934a4e63fcPatch
FAQ
What is CVE-2023-52877?
CVE-2023-52877 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 f...
How severe is CVE-2023-52877?
CVE-2023-52877 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-52877?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.