{"id":"CVE-2023-53472","summary":"pwm: lpc32xx: Remove handling of PWM channels","details":"In the Linux kernel, the following vulnerability has been resolved:\n\npwm: lpc32xx: Remove handling of PWM channels\n\nBecause LPC32xx PWM controllers have only a single output which is\nregistered as the only PWM device/channel per controller, it is known in\nadvance that pwm-\u003ehwpwm value is always 0. On basis of this fact\nsimplify the code by removing operations with pwm-\u003ehwpwm, there is no\ncontrols which require channel number as input.\n\nEven though I wasn't aware at the time when I forward ported that patch,\nthis fixes a null pointer dereference as lpc32xx-\u003echip.pwms is NULL\nbefore devm_pwmchip_add() is called.","modified":"2026-04-02T09:44:17.162750Z","published":"2025-10-01T11:42:41.951Z","related":["SUSE-SU-2025:03600-1","SUSE-SU-2025:03615-1","SUSE-SU-2025:03628-1","SUSE-SU-2025:03634-1","SUSE-SU-2025:20851-1","SUSE-SU-2025:20861-1","SUSE-SU-2025:20870-1","SUSE-SU-2025:20898-1","SUSE-SU-2025:3716-1","SUSE-SU-2025:3751-1","SUSE-SU-2025:3761-1","SUSE-SU-2025:4057-1","SUSE-SU-2025:4132-1","SUSE-SU-2025:4141-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53472.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/04301da4d87067a989f70ee56942bf9d97cd2a45"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4aae44f65827f0213a7361cf9c32cfe06114473f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/523f6268e86552a048975749251184c4e9a4b38f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5e22217c11424ef958ba28d03ff7167b4d7a8914"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a2d9d884e84bfd37892219b1f55847f36d8e9901"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a9a505f5b39d8fff1a55963a5e524c84639e98b2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/abd9b2ee4047ccd980decbf26d61f9637604b1d5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e3a0ddbaf7f1f9ffc070718b417461ced3268758"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53472.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53472"},{"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":"bb4de81eb940e7027f37a6fd3b7ddcb4403deb56"},{"fixed":"abd9b2ee4047ccd980decbf26d61f9637604b1d5"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4459118977665f681017e1299933895d54b6e87b"},{"fixed":"a9a505f5b39d8fff1a55963a5e524c84639e98b2"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"81e6b51709da162b94e40a445bb60856406beaa1"},{"fixed":"04301da4d87067a989f70ee56942bf9d97cd2a45"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"322b70b522abe03cd59712bb47a72eddd835d19d"},{"fixed":"a2d9d884e84bfd37892219b1f55847f36d8e9901"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"3d2813fb17e5fd0d73c1d1442ca0192bde4af10e"},{"fixed":"5e22217c11424ef958ba28d03ff7167b4d7a8914"},{"fixed":"523f6268e86552a048975749251184c4e9a4b38f"},{"fixed":"e3a0ddbaf7f1f9ffc070718b417461ced3268758"},{"fixed":"4aae44f65827f0213a7361cf9c32cfe06114473f"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"7fc2172ad4e701d3c6e7dcb7b2efd8df71d2417b"},{"last_affected":"1c90a357cef4219cb436e59cc7463888103e104b"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53472.json"}}],"schema_version":"1.7.5"}