{"id":"CVE-2025-38240","summary":"drm/mediatek: dp: drm_err =\u003e dev_err in HPD path to avoid NULL ptr","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/mediatek: dp: drm_err =\u003e dev_err in HPD path to avoid NULL ptr\n\nThe function mtk_dp_wait_hpd_asserted() may be called before the\n`mtk_dp-\u003edrm_dev` pointer is assigned in mtk_dp_bridge_attach().\nSpecifically it can be called via this callpath:\n - mtk_edp_wait_hpd_asserted\n - [panel probe]\n - dp_aux_ep_probe\n\nUsing \"drm\" level prints anywhere in this callpath causes a NULL\npointer dereference. Change the error message directly in\nmtk_dp_wait_hpd_asserted() to dev_err() to avoid this. Also change the\nerror messages in mtk_dp_parse_capabilities(), which is called by\nmtk_dp_wait_hpd_asserted().\n\nWhile touching these prints, also add the error code to them to make\nfuture debugging easier.","modified":"2026-04-16T00:02:13.345159015Z","published":"2025-04-18T07:01:32.338Z","related":["SUSE-SU-2025:01964-1","SUSE-SU-2025:01965-1","SUSE-SU-2025:02000-1","SUSE-SU-2025:02254-1","SUSE-SU-2025:02307-1","SUSE-SU-2025:02333-1","SUSE-SU-2025:02923-1","SUSE-SU-2025:20408-1","SUSE-SU-2025:20413-1","SUSE-SU-2025:20419-1","SUSE-SU-2025:20421-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38240.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/106a6de46cf4887d535018185ec528ce822d6d84"},{"type":"WEB","url":"https://git.kernel.org/stable/c/13ec849fd2eab808ee8eba2625df7ebea3b85edf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/149a5c38436c229950cf1020992ce65c9549bc19"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2fda391ef7a701748abd7fa32232981b522c1e07"},{"type":"WEB","url":"https://git.kernel.org/stable/c/57a9fb47551b33cde7b76d17c0072c3b394f4620"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38240.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-38240"},{"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":"7eacba9a083be65c0f251c19380ec01147c01ebc"},{"fixed":"13ec849fd2eab808ee8eba2625df7ebea3b85edf"},{"fixed":"57a9fb47551b33cde7b76d17c0072c3b394f4620"},{"fixed":"2fda391ef7a701748abd7fa32232981b522c1e07"},{"fixed":"149a5c38436c229950cf1020992ce65c9549bc19"},{"fixed":"106a6de46cf4887d535018185ec528ce822d6d84"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38240.json"}}],"schema_version":"1.7.5"}