CVE-2023-52877
usb: typec: tcpm: Fix NULL pointer dereference in tcpm_pd_svdm()
- Published
- Updated
- Reserved
- Assigned by
- Linux
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.22% · top 87% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
- affected 5e1d4c49fbc86dab6e005d66f066bd53c9479cde – < e5f53a68a596e04df3fde3099273435a30b6fdac
- affected 5e1d4c49fbc86dab6e005d66f066bd53c9479cde – < e7a802447c491903aa7cb45967aa2a934a4e63fc
- affected 5e1d4c49fbc86dab6e005d66f066bd53c9479cde – < 9ee038590d808a95d16adf92818dcd4752273c08
- affected 5e1d4c49fbc86dab6e005d66f066bd53c9479cde – < b37a168c0137156042a0ca9626651b5a789e822b
- affected 5e1d4c49fbc86dab6e005d66f066bd53c9479cde – < 4987daf86c152ff882d51572d154ad12e4ff3a4b
- affected 5.12
- unaffected < 5.12
- unaffected 5.15.138 – ≤ 5.15.*
- unaffected 6.1.62 – ≤ 6.1.*
- unaffected 6.5.11 – ≤ 6.5.*
- unaffected 6.6.1 – ≤ 6.6.*
- unaffected 6.7 – ≤ *
References (5)
- https://git.kernel.org/stable/c/e5f53a68a596e04df3fde3099273435a30b6fdac (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/e7a802447c491903aa7cb45967aa2a934a4e63fc (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/9ee038590d808a95d16adf92818dcd4752273c08 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/b37a168c0137156042a0ca9626651b5a789e822b (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/4987daf86c152ff882d51572d154ad12e4ff3a4b (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-52877)Record last updated .