{"id":"CVE-2025-40263","state":"PUBLISHED","title":"Input: cros_ec_keyb - fix an invalid memory access","description":"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->idev` 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->idev` and friends if\nthe driver doesn't intend to initialize them.","publishedAt":"2025-12-04T16:08:23.327Z","updatedAt":"2026-06-02T13:00:15.067Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0","status":"affected","lessThan":"d74864291cb8bd784d44d1d02e87109cf88666bb","versionType":"git"},{"version":"ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0","status":"affected","lessThan":"9cf59f4724a9ee06ebb06c76b8678ac322e850b7","versionType":"git"},{"version":"ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0","status":"affected","lessThan":"6d81068685154535af06163eb585d6d9663ec7ec","versionType":"git"},{"version":"ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0","status":"affected","lessThan":"2d251c15c27e2dd16d6318425d2f7260cbd47d39","versionType":"git"},{"version":"ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0","status":"affected","lessThan":"e08969c4d65ac31297fcb4d31d4808c789152f68","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/input/keyboard/cros_ec_keyb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.19","versionType":"semver"},{"version":"6.1.159","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.118","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.60","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.10","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/input/keyboard/cros_ec_keyb.c"]}],"references":["https://git.kernel.org/stable/c/d74864291cb8bd784d44d1d02e87109cf88666bb","https://git.kernel.org/stable/c/9cf59f4724a9ee06ebb06c76b8678ac322e850b7","https://git.kernel.org/stable/c/6d81068685154535af06163eb585d6d9663ec7ec","https://git.kernel.org/stable/c/2d251c15c27e2dd16d6318425d2f7260cbd47d39","https://git.kernel.org/stable/c/e08969c4d65ac31297fcb4d31d4808c789152f68","https://cert-portal.siemens.com/productcert/html/ssa-253495.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:09.358Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/40xxx/CVE-2025-40263.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-40263","state":"PUBLISHED","datePublished":"2025-12-04T16:08:23.327Z","dateUpdated":"2026-06-02T13:00:15.067Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-04-16T07:20:57.182Z"},"containers":{"cna":{"title":"Input: cros_ec_keyb - fix an invalid memory access","descriptions":[{"lang":"en","value":"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->idev` 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->idev` and friends if\nthe driver doesn't intend to initialize them."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0","status":"affected","lessThan":"d74864291cb8bd784d44d1d02e87109cf88666bb","versionType":"git"},{"version":"ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0","status":"affected","lessThan":"9cf59f4724a9ee06ebb06c76b8678ac322e850b7","versionType":"git"},{"version":"ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0","status":"affected","lessThan":"6d81068685154535af06163eb585d6d9663ec7ec","versionType":"git"},{"version":"ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0","status":"affected","lessThan":"2d251c15c27e2dd16d6318425d2f7260cbd47d39","versionType":"git"},{"version":"ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0","status":"affected","lessThan":"e08969c4d65ac31297fcb4d31d4808c789152f68","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/input/keyboard/cros_ec_keyb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.19","versionType":"semver"},{"version":"6.1.159","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.118","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.60","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.10","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/input/keyboard/cros_ec_keyb.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/d74864291cb8bd784d44d1d02e87109cf88666bb"},{"url":"https://git.kernel.org/stable/c/9cf59f4724a9ee06ebb06c76b8678ac322e850b7"},{"url":"https://git.kernel.org/stable/c/6d81068685154535af06163eb585d6d9663ec7ec"},{"url":"https://git.kernel.org/stable/c/2d251c15c27e2dd16d6318425d2f7260cbd47d39"},{"url":"https://git.kernel.org/stable/c/e08969c4d65ac31297fcb4d31d4808c789152f68"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:45:57.409Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.1.159"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.6.118"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.12.60"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.17.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.18"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"affected":[{"vendor":"Siemens","product":"RUGGEDCOM RST2428P","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"V4.0","versionType":"custom"}]}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-253495.html"}],"providerMetadata":{"shortName":"siemens-SADP","orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","dateUpdated":"2026-06-02T13:00:15.067Z"},"x_adpType":"supplier"}]}}}