{"id":"CVE-2025-40263","summary":"Input: cros_ec_keyb - fix an invalid memory access","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nInput: cros_ec_keyb - fix an invalid memory access\n\nIf cros_ec_keyb_register_matrix() isn't called (due to\n`buttons_switches_only`) in cros_ec_keyb_probe(), `ckdev-\u003eidev` remains\nNULL.  An invalid memory access is observed in cros_ec_keyb_process()\nwhen receiving an EC_MKBP_EVENT_KEY_MATRIX event in cros_ec_keyb_work()\nin such case.\n\n  Unable to handle kernel read from unreadable memory at virtual address 0000000000000028\n  ...\n  x3 : 0000000000000000 x2 : 0000000000000000\n  x1 : 0000000000000000 x0 : 0000000000000000\n  Call trace:\n  input_event\n  cros_ec_keyb_work\n  blocking_notifier_call_chain\n  ec_irq_thread\n\nIt's still unknown about why the kernel receives such malformed event,\nin any cases, the kernel shouldn't access `ckdev-\u003eidev` and friends if\nthe driver doesn't intend to initialize them.","modified":"2026-03-31T17:30:05.278130Z","published":"2025-12-04T16:08:23.327Z","related":["MGASA-2026-0017","MGASA-2026-0018","SUSE-SU-2026:0278-1","SUSE-SU-2026:0281-1","SUSE-SU-2026:0293-1","SUSE-SU-2026:0315-1","SUSE-SU-2026:20207-1","SUSE-SU-2026:20220-1","SUSE-SU-2026:20228-1","SUSE-SU-2026:20477-1","SUSE-SU-2026:20498-1","SUSE-SU-2026:20845-1","SUSE-SU-2026:20876-1","openSUSE-SU-2026:20145-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40263.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2d251c15c27e2dd16d6318425d2f7260cbd47d39"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6d81068685154535af06163eb585d6d9663ec7ec"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9cf59f4724a9ee06ebb06c76b8678ac322e850b7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d74864291cb8bd784d44d1d02e87109cf88666bb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e08969c4d65ac31297fcb4d31d4808c789152f68"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40263.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-40263"},{"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":"ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0"},{"fixed":"d74864291cb8bd784d44d1d02e87109cf88666bb"},{"fixed":"9cf59f4724a9ee06ebb06c76b8678ac322e850b7"},{"fixed":"6d81068685154535af06163eb585d6d9663ec7ec"},{"fixed":"2d251c15c27e2dd16d6318425d2f7260cbd47d39"},{"fixed":"e08969c4d65ac31297fcb4d31d4808c789152f68"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40263.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.19.0"},{"fixed":"6.1.159"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.118"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.60"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.17.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40263.json"}}],"schema_version":"1.7.5"}