{"id":"CVE-2026-93115","summary":"platform/mellanox: mlxbf-pmc: Check ACPI_COMPANION() against NULL","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/mellanox: mlxbf-pmc: Check ACPI_COMPANION() against NULL\n\nEvery platform driver can be forced to match a device that doesn't match\nits list of device IDs because of device_match_driver_override(), so\nplatform drivers that rely on the existence of a device's ACPI companion\nobject need to verify its presence.\n\nmlxbf_pmc_probe() passes the result of ACPI_COMPANION() to\nacpi_device_hid(), which dereferences it, so force-binding the driver to\na device without an ACPI companion leads to a NULL pointer dereference.\n\nAccordingly, add a requisite ACPI_COMPANION() check against NULL to the\nmlxbf-pmc driver and return -ENODEV when the companion is missing.","modified":"2026-09-19T03:47:27.873251086Z","published":"2026-09-17T16:11:23.145Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93115.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/71ba8b6e28f7a83b724036f5de07e03bb5473286"},{"type":"WEB","url":"https://git.kernel.org/stable/c/950d8e8375f3ff4787de51b7bdf8dd23a3ad6547"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a75b84119e56fc34b0f1403f3b93d357a55dabb6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bf1e0cc5cc1d4e71b699fc98cc9198ead0ed53e0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c38cce70adef874c2a7b5132c14d6c221401deff"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d25dd08268aeaceb485189aaa84aa6d68a460291"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fdfb736282b9665c0169df0c4152ec91fdea2767"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93115.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93115"},{"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":"1a218d312e65ec396b2739056a8ea78493015f21"},{"fixed":"950d8e8375f3ff4787de51b7bdf8dd23a3ad6547"},{"fixed":"fdfb736282b9665c0169df0c4152ec91fdea2767"},{"fixed":"bf1e0cc5cc1d4e71b699fc98cc9198ead0ed53e0"},{"fixed":"a75b84119e56fc34b0f1403f3b93d357a55dabb6"},{"fixed":"71ba8b6e28f7a83b724036f5de07e03bb5473286"},{"fixed":"d25dd08268aeaceb485189aaa84aa6d68a460291"},{"fixed":"c38cce70adef874c2a7b5132c14d6c221401deff"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93115.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"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-2026-93115.json"}}],"schema_version":"1.9.0"}