CVE-2026-93115platform/mellanox: mlxbf-pmc: Check ACPI_COMPANION() against NULL
Updated under an hour ago ()
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1a218d312e65ec396b2739056a8ea78493015f21 before 950d8e8375f3ff4787de51b7bdf8dd23a3ad6547; from 1a218d312e65ec396b2739056a8ea78493015f21 before fdfb736282b9665c0169df0c4152ec91fdea2767; from 1a218d312e65ec396b2739056a8ea78493015f21 before bf1e0cc5cc1d4e71b699fc98cc9198ead0ed53e0; from 1a218d312e65ec396b2739056a8ea78493015f21 before a75b84119e56fc34b0f1403f3b93d357a55dabb6; from 1a218d312e65ec396b2739056a8ea78493015f21 before 71ba8b6e28f7a83b724036f5de07e03bb5473286; from 1a218d312e65ec396b2739056a8ea78493015f21 before d25dd08268aeaceb485189aaa84aa6d68a460291; from 1a218d312e65ec396b2739056a8ea78493015f21 before c38cce70adef874c2a7b5132c14d6c221401deff | CNA record |
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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.