{"id":"CVE-2023-52877","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-52877","generatedAt":"2026-10-27T23:56:14.562Z","title":"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.","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: tcpm: Fix NULL pointer dereference in tcpm_pd_svdm()\n\nIt is possible that typec_register_partner() returns ERR_PTR on failure.\nWhen port->partner is an error, a NULL pointer dereference may occur as\nshown below.\n\n[91222.095236][  T319] typec port0: failed to register partner (-17)\n...\n[91225.061491][  T319] Unable to handle kernel NULL pointer dereference\nat virtual address 000000000000039f\n[91225.274642][  T319] pc : tcpm_pd_data_request+0x310/0x13fc\n[91225.274646][  T319] lr : tcpm_pd_data_request+0x298/0x13fc\n[91225.308067][  T319] Call trace:\n[91225.308070][  T319]  tcpm_pd_data_request+0x310/0x13fc\n[91225.308073][  T319]  tcpm_pd_rx_handler+0x100/0x9e8\n[91225.355900][  T319]  kthread_worker_fn+0x178/0x58c\n[91225.355902][  T319]  kthread+0x150/0x200\n[91225.355905][  T319]  ret_from_fork+0x10/0x30\n\nAdd a check for port->partner to avoid dereferencing a NULL pointer.","published":"2024-05-21T16:15:24.000Z","lastModified":"2026-06-17T06:43:50.000Z","status":"Analyzed","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-476"],"affected":["linux/linux kernel"],"epss":{"score":0.00222,"percentile":0.12727,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/4987daf86c152ff882d51572d154ad12e4ff3a4b","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9ee038590d808a95d16adf92818dcd4752273c08","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b37a168c0137156042a0ca9626651b5a789e822b","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e5f53a68a596e04df3fde3099273435a30b6fdac","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e7a802447c491903aa7cb45967aa2a934a4e63fc","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4987daf86c152ff882d51572d154ad12e4ff3a4b","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/9ee038590d808a95d16adf92818dcd4752273c08","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/b37a168c0137156042a0ca9626651b5a789e822b","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/e5f53a68a596e04df3fde3099273435a30b6fdac","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/e7a802447c491903aa7cb45967aa2a934a4e63fc","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-52877","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}