VulnerabilityPublished 17 Sep 2026Updated 19 Oct 2026

CVE-2026-93115: Linux kernel · platform/mellanox: mlxbf-pmc: Check ACPI_COMPANION() against NULL

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in fdfb736282b9665c0169df0c4152ec91fdea2767 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 12:55 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in fdfb736282b9665c0169df0c4152ec91fdea2767, d25dd08268aeaceb485189aaa84aa6d68a460291, c38cce70adef874c2a7b5132c14d6c221401deff +4

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 1a218d312e65ec396b2739056a8ea78493015f21, < fdfb736282b9665c0169df0c4152ec91fdea2767	Fixed in fdfb736282b9665c0169df0c4152ec91fdea2767
LinuxLinux	Affected ≥ 1a218d312e65ec396b2739056a8ea78493015f21, < d25dd08268aeaceb485189aaa84aa6d68a460291	Fixed in d25dd08268aeaceb485189aaa84aa6d68a460291
LinuxLinux	Affected ≥ 1a218d312e65ec396b2739056a8ea78493015f21, < c38cce70adef874c2a7b5132c14d6c221401deff	Fixed in c38cce70adef874c2a7b5132c14d6c221401deff
LinuxLinux	Affected ≥ 1a218d312e65ec396b2739056a8ea78493015f21, < bf1e0cc5cc1d4e71b699fc98cc9198ead0ed53e0	Fixed in bf1e0cc5cc1d4e71b699fc98cc9198ead0ed53e0
LinuxLinux	Affected ≥ 1a218d312e65ec396b2739056a8ea78493015f21, < a75b84119e56fc34b0f1403f3b93d357a55dabb6	Fixed in a75b84119e56fc34b0f1403f3b93d357a55dabb6
LinuxLinux	Affected ≥ 1a218d312e65ec396b2739056a8ea78493015f21, < 950d8e8375f3ff4787de51b7bdf8dd23a3ad6547	Fixed in 950d8e8375f3ff4787de51b7bdf8dd23a3ad6547

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.

References

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