{"id":"CVE-2026-93114","summary":"platform/surface: acpi-notify: Check ACPI companion before use","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/surface: acpi-notify: Check ACPI companion before use\n\nSince every platform driver can be forced to match a device that doesn't\nmatch its list of device IDs because of device_match_driver_override(),\nplatform drivers that rely on the existence of a device's ACPI companion\nobject should verify its presence.\n\nsan_probe() dereferences the result of ACPI_COMPANION() when installing\nthe GSBUS address space handler, so force-binding the driver to a device\nwithout an ACPI companion leads to a NULL pointer dereference.  The\ndereference was introduced when the probe function was switched from\nACPI_HANDLE() to ACPI_COMPANION().\n\nCheck the ACPI companion against NULL and return -ENODEV when it is\nmissing, like commit e4865a56d013 (\"ACPI: driver: Check ACPI_COMPANION()\nagainst NULL during probe\") does for the core ACPI platform drivers.","modified":"2026-09-19T03:47:31.539882640Z","published":"2026-09-17T16:11:22.463Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93114.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2b3a5dabe89e330413af403246b648c1890f368f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3855be0100efb98c26228c610db70a673611f3bd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/428a82d987fcd8844e8868c85582eae75b4b5c51"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4faa43d4ef0b98beb6c2b77a279f4aa5d7fa2d13"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7fea5a310e3b2db24f7aafe64897e4e659ffbb7d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9b6479da662c2ec4e931ed9f7228df46aa8c3766"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f276b62f2ce1cbff7fa50a8ee5afd8fef5a60897"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93114.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93114"},{"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":"a9e10e58730432e5de840eb3ddd55c75f29341b3"},{"fixed":"4faa43d4ef0b98beb6c2b77a279f4aa5d7fa2d13"},{"fixed":"3855be0100efb98c26228c610db70a673611f3bd"},{"fixed":"f276b62f2ce1cbff7fa50a8ee5afd8fef5a60897"},{"fixed":"9b6479da662c2ec4e931ed9f7228df46aa8c3766"},{"fixed":"7fea5a310e3b2db24f7aafe64897e4e659ffbb7d"},{"fixed":"428a82d987fcd8844e8868c85582eae75b4b5c51"},{"fixed":"2b3a5dabe89e330413af403246b648c1890f368f"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93114.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.14.0"},{"fixed":"5.15.221"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.188"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.52"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93114.json"}}],"schema_version":"1.9.0"}