{"id":"CVE-2023-52877","summary":"usb: typec: tcpm: Fix NULL pointer dereference in tcpm_pd_svdm()","details":"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-\u003epartner 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-\u003epartner to avoid dereferencing a NULL pointer.","modified":"2026-04-11T12:46:37.870788Z","published":"2024-05-21T15:32:09.946Z","related":["ALSA-2024:4352","SUSE-SU-2024:2008-1","SUSE-SU-2024:2011-1","SUSE-SU-2024:2019-1","SUSE-SU-2024:2189-1","SUSE-SU-2024:2190-1","SUSE-SU-2024:2571-1","SUSE-SU-2024:2896-1","SUSE-SU-2024:2973-1","SUSE-SU-2025:20008-1","SUSE-SU-2025:20028-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52877.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/4987daf86c152ff882d51572d154ad12e4ff3a4b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9ee038590d808a95d16adf92818dcd4752273c08"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b37a168c0137156042a0ca9626651b5a789e822b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e5f53a68a596e04df3fde3099273435a30b6fdac"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e7a802447c491903aa7cb45967aa2a934a4e63fc"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52877.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-52877"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5e1d4c49fbc86dab6e005d66f066bd53c9479cde"},{"fixed":"e5f53a68a596e04df3fde3099273435a30b6fdac"},{"fixed":"e7a802447c491903aa7cb45967aa2a934a4e63fc"},{"fixed":"9ee038590d808a95d16adf92818dcd4752273c08"},{"fixed":"b37a168c0137156042a0ca9626651b5a789e822b"},{"fixed":"4987daf86c152ff882d51572d154ad12e4ff3a4b"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-52877.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.12.0"},{"fixed":"5.15.138"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.62"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.5.11"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.6.0"},{"fixed":"6.6.1"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-52877.json"}}],"schema_version":"1.7.5"}