{"id":"CVE-2026-93115","revision":"19c7d7f6c423482e89d59c4fcaa1e281","records":[{"revision":"19c7d7f6c423482e89d59c4fcaa1e281","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-93115","aliases":[],"title":"platform/mellanox: mlxbf-pmc: Check ACPI_COMPANION() against NULL","description":"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.","state":0,"publishedAt":"2026-09-17T16:11:23.145+00:00","modifiedAt":"2026-10-19T09:05:49.022+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/platform/mellanox/mlxbf-pmc.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"1a218d312e65ec396b2739056a8ea78493015f21\",\n                            \"lessThan\": \"950d8e8375f3ff4787de51b7bdf8dd23a3ad6547\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1a218d312e65ec396b2739056a8ea78493015f21\",\n                            \"lessThan\": \"fdfb736282b9665c0169df0c4152ec91fdea2767\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1a218d312e65ec396b2739056a8ea78493015f21\",\n                            \"lessThan\": \"bf1e0cc5cc1d4e71b699fc98cc9198ead0ed53e0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1a218d312e65ec396b2739056a8ea78493015f21\",\n                            \"lessThan\": \"a75b84119e56fc34b0f1403f3b93d357a55dabb6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1a218d312e65ec396b2739056a8ea78493015f21\",\n                            \"lessThan\": \"71ba8b6e28f7a83b724036f5de07e03bb5473286\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1a218d312e65ec396b2739056a8ea78493015f21\",\n                            \"lessThan\": \"d25dd08268aeaceb485189aaa84aa6d68a460291\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1a218d312e65ec396b2739056a8ea78493015f21\",\n                            \"lessThan\": \"c38cce70adef874c2a7b5132c14d6c221401deff\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/platform/mellanox/mlxbf-pmc.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.11\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.11\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/950d8e8375f3ff4787de51b7bdf8dd23a3ad6547","https://git.kernel.org/stable/c/fdfb736282b9665c0169df0c4152ec91fdea2767","https://git.kernel.org/stable/c/bf1e0cc5cc1d4e71b699fc98cc9198ead0ed53e0","https://git.kernel.org/stable/c/a75b84119e56fc34b0f1403f3b93d357a55dabb6","https://git.kernel.org/stable/c/71ba8b6e28f7a83b724036f5de07e03bb5473286","https://git.kernel.org/stable/c/d25dd08268aeaceb485189aaa84aa6d68a460291","https://git.kernel.org/stable/c/c38cce70adef874c2a7b5132c14d6c221401deff"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-93115","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-93115","identifiers":["CVE-2026-93115"]},"retained":false,"historicalAffected":[]}],"coverage":[]}