CVE-2023-52877

usb: typec: tcpm: Fix NULL pointer dereference in tcpm_pd_svdm()

MEDIUM

5.5

CVSS Score

Published: May 21, 2024 at 03:32 PM UTC

Updated: June 17, 2026 at 06:43 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

5.12 ≤ v < 5.15.1385.12 ≤ v < 6.1.625.12 ≤ v < 6.5.115.12 ≤ v < 6.6.15.12 ≤ v < 6.75.16 ≤ v < 6.1.626.2 ≤ v < 6.5.116.6 ≤ v < 6.6.15.125e1d4c49fbc86dab6e005d66f066bd53c9479cde

Vendor states this is fixed in 4987daf86c152ff882d51572d154ad12e4ff3a4b (fixed)

Vendor states this is fixed in 9ee038590d808a95d16adf92818dcd4752273c08 (fixed)

Vendor states this is fixed in b37a168c0137156042a0ca9626651b5a789e822b (fixed)

Vendor states this is fixed in e5f53a68a596e04df3fde3099273435a30b6fdac (fixed)

Vendor states this is fixed in e7a802447c491903aa7cb45967aa2a934a4e63fc (fixed)

Vendor states this is fixed in 5.12 (unaffected)

Vendor states this is fixed in 5.15.138 (unaffected)

Vendor states this is fixed in 6.1.62 (unaffected)

Vendor states this is fixed in 6.5.11 (unaffected)

Vendor states this is fixed in 6.6.1 (unaffected)

Vendor states this is fixed in 6.7 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references