CVE-2026-93115 Affecting linux-6.12 package, versions <6.12.111-1~deb12u1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN12-LINUX612-20506397
- published5 Oct 2026
- disclosed17 Sept 2026
Introduced: 17 Sep 2026
NewCVE-2026-93115 (opens in a new tab)How to fix?
Upgrade Debian:12 linux-6.12 to version 6.12.111-1~deb12u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream linux-6.12 package and not the linux-6.12 package as distributed by Debian.
See How to fix? for Debian:12 relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2026-93115
- 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