{"id":"CVE-2026-93115","title":"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 becau…","summary":"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 becau…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 1a218d312e65ec396b2739056a8ea78493015f21 < 950d8e8375f3ff4787de51b7bdf8dd23a3ad6547","Linux >= 1a218d312e65ec396b2739056a8ea78493015f21 < fdfb736282b9665c0169df0c4152ec91fdea2767","Linux >= 1a218d312e65ec396b2739056a8ea78493015f21 < bf1e0cc5cc1d4e71b699fc98cc9198ead0ed53e0","Linux >= 1a218d312e65ec396b2739056a8ea78493015f21 < a75b84119e56fc34b0f1403f3b93d357a55dabb6","Linux >= 1a218d312e65ec396b2739056a8ea78493015f21 < 71ba8b6e28f7a83b724036f5de07e03bb5473286","Linux >= 1a218d312e65ec396b2739056a8ea78493015f21 < d25dd08268aeaceb485189aaa84aa6d68a460291","Linux >= 1a218d312e65ec396b2739056a8ea78493015f21 < c38cce70adef874c2a7b5132c14d6c221401deff","Linux 5.11"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:18:06.073","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93115","references":[{"url":"https://git.kernel.org/stable/c/71ba8b6e28f7a83b724036f5de07e03bb5473286","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/950d8e8375f3ff4787de51b7bdf8dd23a3ad6547","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a75b84119e56fc34b0f1403f3b93d357a55dabb6","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bf1e0cc5cc1d4e71b699fc98cc9198ead0ed53e0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c38cce70adef874c2a7b5132c14d6c221401deff","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d25dd08268aeaceb485189aaa84aa6d68a460291","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fdfb736282b9665c0169df0c4152ec91fdea2767","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.752Z","epss":0.00206,"epssPercentile":0.10941,"slug":"CVE-2026-93115","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}