platform/mellanox: mlxbf-pmc: Check ACPI_COMPANION() against NULL
Summary
| CVE | CVE-2026-93115 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-17 17:18:06 UTC |
| Updated | 2026-09-17 17:18:06 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: platform/mellanox: mlxbf-pmc: Check ACPI_COMPANION() against NULL Every platform driver can be forced to match a device that doesn't match its list of device IDs because of device_match_driver_override(), so platform drivers that rely on the existence of a device's ACPI companion object need to verify its presence. mlxbf_pmc_probe() passes the result of ACPI_COMPANION() to acpi_device_hid(), which dereferences it, so force-binding the driver to a device without an ACPI companion leads to a NULL pointer dereference. Accordingly, add a requisite ACPI_COMPANION() check against NULL to the mlxbf-pmc driver and return -ENODEV when the companion is missing. |
Risk And Classification
EPSS: 0.002060000 probability, percentile 0.109940000 (date 2026-09-18)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 1a218d312e65ec396b2739056a8ea78493015f21 950d8e8375f3ff4787de51b7bdf8dd23a3ad6547 git | Not specified |
| CNA | Linux | Linux | affected 1a218d312e65ec396b2739056a8ea78493015f21 fdfb736282b9665c0169df0c4152ec91fdea2767 git | Not specified |
| CNA | Linux | Linux | affected 1a218d312e65ec396b2739056a8ea78493015f21 bf1e0cc5cc1d4e71b699fc98cc9198ead0ed53e0 git | Not specified |
| CNA | Linux | Linux | affected 1a218d312e65ec396b2739056a8ea78493015f21 a75b84119e56fc34b0f1403f3b93d357a55dabb6 git | Not specified |
| CNA | Linux | Linux | affected 1a218d312e65ec396b2739056a8ea78493015f21 71ba8b6e28f7a83b724036f5de07e03bb5473286 git | Not specified |
| CNA | Linux | Linux | affected 1a218d312e65ec396b2739056a8ea78493015f21 d25dd08268aeaceb485189aaa84aa6d68a460291 git | Not specified |
| CNA | Linux | Linux | affected 1a218d312e65ec396b2739056a8ea78493015f21 c38cce70adef874c2a7b5132c14d6c221401deff git | Not specified |
| CNA | Linux | Linux | affected 5.11 | Not specified |
| CNA | Linux | Linux | unaffected 5.11 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.221 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.188 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.157 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.110 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.52 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2.6 7.2.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.3-rc1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/950d8e8375f3ff4787de51b7bdf8dd23a3ad6547 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/fdfb736282b9665c0169df0c4152ec91fdea2767 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d25dd08268aeaceb485189aaa84aa6d68a460291 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/bf1e0cc5cc1d4e71b699fc98cc9198ead0ed53e0 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/71ba8b6e28f7a83b724036f5de07e03bb5473286 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/c38cce70adef874c2a7b5132c14d6c221401deff | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/a75b84119e56fc34b0f1403f3b93d357a55dabb6 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.