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NVD / CVE Program· CNA Linux

CVE-2026-93114: platform/surface: acpi-notify: Check ACPI companion before use

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.17% (FIRST EPSS).
  • Fixed version: Linux Linux 2b3a5dabe89e330413af403246b648c1890f368f, 3855be0100efb98c26228c610db70a673611f3bd, 428a82d987fcd8844e8868c85582eae75b4b5c51; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 6.6.157.1-1.

Low priority for now. Upgrade to Linux Linux 2b3a5dabe89e330413af403246b648c1890f368f, 3855be0100efb98c26228c610db70a673611f3bd, 428a82d987fcd8844e8868c85582eae75b4b5c51; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 6.6.157.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: platform/surface: acpi-notify: Check ACPI companion before use Since 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(), platform drivers that rely on the existence of a device's ACPI companion object should verify its presence. san_probe() dereferences the result of ACPI_COMPANION() when installing the GSBUS address space handler, so force-binding the driver to a device without an ACPI companion leads to a NULL pointer dereference. The dereference was introduced when the probe function was switched from ACPI_HANDLE() to ACPI_COMPANION(). Check the ACPI companion against NULL and return -ENODEV when it is missing, like commit e4865a56d013 ("ACPI: driver: Check ACPI_COMPANION() against NULL during probe") does for the core ACPI platform drivers.

—No exploit Fix available
Published
Sep 17, 2026
Updated
Oct 19, 2026
EPSS
0.1% · 6th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.14affected
    • a9e10e58730432e5de840eb3ddd55c75f29341b3 and later · before 4faa43d4ef0b98beb6c2b77a279f4aa5d7fa2d13affected · git
    • a9e10e58730432e5de840eb3ddd55c75f29341b3 and later · before 3855be0100efb98c26228c610db70a673611f3bdaffected · git
    • a9e10e58730432e5de840eb3ddd55c75f29341b3 and later · before f276b62f2ce1cbff7fa50a8ee5afd8fef5a60897affected · git
    • a9e10e58730432e5de840eb3ddd55c75f29341b3 and later · before 9b6479da662c2ec4e931ed9f7228df46aa8c3766affected · git
    • a9e10e58730432e5de840eb3ddd55c75f29341b3 and later · before 7fea5a310e3b2db24f7aafe64897e4e659ffbb7daffected · git
    • a9e10e58730432e5de840eb3ddd55c75f29341b3 and later · before 428a82d987fcd8844e8868c85582eae75b4b5c51affected · git
    • a9e10e58730432e5de840eb3ddd55c75f29341b3 and later · before 2b3a5dabe89e330413af403246b648c1890f368faffected · git
    • before 5.14not affected · semver
    • 5.15.221 and later · up to and including 5.15.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-93112Sep 17, 2026 · bpf: Require a BPF cpumask for bpf_cpumask_populate()
    28Monitor
  • ← EarlierCVE-2026-93113Sep 17, 2026 · clk: qcom: camcc-sc8280xp: unregister CAMCC_GDSC_CLK
    0Monitor
  • Later →CVE-2026-93115Sep 17, 2026 · platform/mellanox: mlxbf-pmc: Check ACPI_COMPANION() against NULL
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux2b3a5dabe89e330413af403246b648c1890f368fVendor (CNA)
Linux Linux3855be0100efb98c26228c610db70a673611f3bdVendor (CNA)
Linux Linux428a82d987fcd8844e8868c85582eae75b4b5c51Vendor (CNA)
Linux Linux4faa43d4ef0b98beb6c2b77a279f4aa5d7fa2d13Vendor (CNA)
Linux Linux7fea5a310e3b2db24f7aafe64897e4e659ffbb7dVendor (CNA)
Linux Linux9b6479da662c2ec4e931ed9f7228df46aa8c3766Vendor (CNA)
Linux Linuxf276b62f2ce1cbff7fa50a8ee5afd8fef5a60897Vendor (CNA)
azl3 kernel 6.6.150.1-1 on Azure Linux 3.0—Microsoft (MSRC)
azl3 kernel 6.6.152.1-1 on Azure Linux 3.06.6.157.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

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