CVE-2026-93115

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.

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References

Other References

https://git.kernel.org/stable/c/71ba8b6e28f7a83b724036f5de07e03bb5473286 https://git.kernel.org/stable/c/950d8e8375f3ff4787de51b7bdf8dd23a3ad6547 https://git.kernel.org/stable/c/a75b84119e56fc34b0f1403f3b93d357a55dabb6 https://git.kernel.org/stable/c/bf1e0cc5cc1d4e71b699fc98cc9198ead0ed53e0 https://git.kernel.org/stable/c/c38cce70adef874c2a7b5132c14d6c221401deff https://git.kernel.org/stable/c/d25dd08268aeaceb485189aaa84aa6d68a460291 https://git.kernel.org/stable/c/fdfb736282b9665c0169df0c4152ec91fdea2767

Frequently Asked Questions

What is CVE-2026-93115? +

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.

How do I check if I'm vulnerable to CVE-2026-93115? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

CVE-2026-93115

Description

References

Other References

Frequently Asked Questions

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